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1. æææ¥ã«é£ã¹ãæ¬æ°ãèšç®ããŸãã
æææ¥ã«ã¯600æ¬ã®2/5ãé£ã¹ãŸããã
\[
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ç«ææ¥ã«ã¯360æ¬ã®ååãé£ã¹ãã®ã§ã
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\[
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3. éææ¥ã«ã¯æ®ãã®3/4ãé£ã¹ãŸãã
éææ¥ã«é£ã¹ãæ¬æ°ã¯ã180æ¬ã®3/4ã§ãã
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\]
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\[
æ®ã = 180 - 135 = 45
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1. **ã©ãã®è²»çš**
- 1æ¯ã®ã©ãã¯4ãã«ã§ãé±5æ¥è³Œå
¥ããŸãã
- é±ã®ã©ãã®æ¯åºïŒ4ãã« Ã 5æ¥ = 20ãã«
- 幎éã®ã©ãã®æ¯åºïŒ20ãã« Ã 52é± = 1040ãã«
2. **ã¢ã€ã¹ã³ãŒããŒã®è²»çš**
- 1æ¯ã®ã¢ã€ã¹ã³ãŒããŒã¯2ãã«ã§ãé±3æ¥è³Œå
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3. **幎éã®ç·ã³ãŒããŒæ¯åº**
- ç·æ¯åº = ã©ã + ã¢ã€ã¹ã³ãŒã㌠= 1040ãã« + 312ãã« = 1352ãã«
4. **25%ã®æžå°ãç®æã**
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- ã³ã¹ã: å3ãã«
- åèšã³ã¹ã = 10å à 3ãã« = 30ãã«
2. ãã§ãªãŒãã€:
- æ°: 12å
- ã³ã¹ã: å5ãã«
- åèšã³ã¹ã = 12å à 5ãã« = 60ãã«
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- ç·ã³ã¹ã = ã«ããã£ãã€ã®ã³ã¹ã + ãã§ãªãŒãã€ã®ã³ã¹ã
- ç·ã³ã¹ã = 30ãã« + 60ãã« = 90ãã«
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- åèšåæ° = 10 + 12 = 22å
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- 売䟡 = 110ãã« / 22å = 5ãã«
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åç: ####5
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8ãã£ãŒã à 12ã€ã³ã/ãã£ãŒã = 96ã€ã³ã
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2 + 12 = 14æ¬
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14 + 2 = 16æ¬
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#### 4
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= 12 ã€ã³ã + (50% à 12 ã€ã³ã)
= 12 ã€ã³ã + 6 ã€ã³ã
= 18 ã€ã³ã
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- ã¹ãã : 12猶 à 3ãã«/猶 = 36ãã«
- ããŒããããã¿ãŒ: 3ç¶ Ã 5ãã«/ç¶ = 15ãã«
- ãã³: 4ããŒã à 2ãã«/ããŒã = 8ãã«
ããããåèšãããšãã°ã¬ã³ãžã£ãŒãæ¯æã£ãç·é¡ã¯æ¬¡ã®ããã«ãªããŸãã
36ãã« + 15ãã« + 8ãã« = 59ãã«
ãããã£ãŠãã°ã¬ã³ãžã£ãŒãæ¯æã£ãåèšéé¡ã¯59ãã«ã§ããæçµçãªåçã¯ä»¥äžã®ããã«ãªããŸãã
#### 59
|
40 |
æææ¥ã«ãã·ãããŒã¯ã¢ãªãœã³ãšããªã¿ããŒããããã« 5 éã®ããã¹ããéããŸããç«ææ¥ã«ã¯ãããããã« 15 éã®ããã¹ããéããŸããã·ãããŒã¯ã¢ãªãœã³ãšããªã¿ããŒã®äž¡æ¹ã«ãäž¡æ¥åãããŠåèšã§ããã€ã®ããã¹ããéããŸãããïŒ
|
ã·ãããŒã¯ã¢ãªãœã³ã«æææ¥ã«5éãç«ææ¥ã«15éã®ããã¹ããéããŸãããããã£ãŠãã¢ãªãœã³ã«éã£ãåèšã¯æ¬¡ã®ããã«ãªããŸãã
\[
5 + 15 = 20 \text{ é}
\]
次ã«ãããªã¿ããŒã«ãåæ§ã«æææ¥ã«5éãç«ææ¥ã«15éã®ããã¹ããéããŸããããªã¿ããŒã«éã£ãåèšãåããæ¬¡ã®ããã«ãªããŸãã
\[
5 + 15 = 20 \text{ é}
\]
ãããã£ãŠãã·ãããŒãã¢ãªãœã³ãšããªã¿ããŒã«äž¡æ¥åãããŠéã£ãããã¹ãã®åèšã¯ã
\[
20 + 20 = 40 \text{ é}
\]
ãšãªããŸãã
ãããã£ãŠãã·ãããŒãã¢ãªãœã³ãšããªã¿ããŒã®äž¡æ¹ã«éã£ãåèšã®ããã¹ãæ°ã¯ã40éã§ãã
åçïŒ####40
|
500 |
蟲家ã¯ããŠã¢ãã³ã·ãè²ãŠãŠããŸããæ€ãã 4 ã€ã®çš®ãã 1 æ¬ã®ããŠã¢ãã³ã·ãåç©«ã§ããããã 10 ã»ã³ãã§å£²ãããšãã§ããŸãã100 çš®ã®çš®ãå
¥ã£ãè¢ã®å€æ®µã¯ 50 ã»ã³ãã§ãã圌ã 40 ãã«ã®å©çãåŸãå Žåã圌ã¯äœæ¬ã®ããŠã¢ãã³ã·ã売ããŸãããïŒ
|
ãŸãã蟲家ãå©çãåŸãããã®ã³ã¹ããèããŸãããã
è¢ã®å€æ®µã¯ 50 ã»ã³ãã§ã100 çš®ã®çš®ãå«ãŸããŠããŸãããã®å Žåã1 çš®ã®çš®ã®å€æ®µã¯ä»¥äžã®ããã«ãªããŸãã
\[
\text{1çš®ã®çš®ã®å€æ®µ} = \frac{50 \text{ã»ã³ã}}{100} = 0.5 \text{ã»ã³ã}
\]
次ã«ãããŠã¢ãã³ã·ã®æ¬æ°ãæ±ããŸãã1 æ¬ã®ããŠã¢ãã³ã·ãè²ãŠãã«ã¯ 4 çš®ã®çš®ãå¿
èŠã§ãã
ãããã£ãŠã1 æ¬ã®ããŠã¢ãã³ã·ãè²ãŠãããã®ã³ã¹ãã¯æ¬¡ã®ããã«ãªããŸãã
\[
\text{1æ¬ã®ããŠã¢ãã³ã·ã®è²æã³ã¹ã} = 4 \times 0.5 \text{ã»ã³ã} = 2 \text{ã»ã³ã}
\]
ããŠã¢ãã³ã· 1 æ¬ã売ããš 10 ã»ã³ãã®åå
¥ããããŸãã®ã§ã1 æ¬ãããã®å©çã¯æ¬¡ã®ããã«èšç®ã§ããŸãã
\[
\text{å©çïŒ1æ¬ãããïŒ} = 10 \text{ã»ã³ã} - 2 \text{ã»ã³ã} = 8 \text{ã»ã³ã}
\]
圌ã 40 ãã«ã®å©çãåŸãããã«ã¯ã次ã®ããã«å¿
èŠãªããŠã¢ãã³ã·ã®æ¬æ°ãèšç®ããŸãã
\[
40 \text{ãã«} = 4000 \text{ã»ã³ã}
\]
ãããã£ãŠãå¿
èŠãªããŠã¢ãã³ã·ã®æ¬æ° \( x \) ã¯æ¬¡ã®ããã«ãªããŸãã
\[
8 \text{ã»ã³ã} \times x = 4000 \text{ã»ã³ã}
\]
ãããè§£ããšã
\[
x = \frac{4000 \text{ã»ã³ã}}{8 \text{ã»ã³ã}} = 500
\]
ãããã£ãŠã圌㯠500 æ¬ã®ããŠã¢ãã³ã·ã売ããŸããã
æçµçãªåç㯠500 ã§ãã®ã§ãçãã¯ä»¥äžã®éãã§ãã
#### 500
|
26 |
ãžã§ãŒã ãºã®æ°Žæ§œã«ã¯ãåºã«é ããŠããããããã¯ãŒã ãããŸããæ¯æ¥ãã¯ãŒã 㯠2 å¹ã®éãé£ã¹ãŸãã2 é±éåŸããžã§ãŒã ãºã¯æ°Žæ§œã« 8 å¹ã®éã远å ããŸãããã® 1 é±éåŸã圌ã¯ããããã¯ãŒã ãçºèŠããŸããæ°Žæ§œã«ã¯æåã« 60 å¹ã®éãããŸããããžã§ãŒã ãºãããããã¯ãŒã ãçºèŠãããšããæ°Žæ§œã«ã¯äœå¹ã®éãããŸããïŒ
|
æåã«æ°Žæ§œã«ã¯ 60 å¹ã®éãããŸããããããã¯ãŒã ã¯æ¯æ¥ 2 å¹ã®éãé£ã¹ãŸãã
ãŸãã2 é±éïŒ14 æ¥éïŒã§ããããã¯ãŒã ãé£ã¹ãéã®æ°ãèšç®ããŸãïŒ
14 æ¥ Ã 2 å¹/æ¥ = 28 å¹ã®é
ãã®ãããæ°Žæ§œã«æ®ãéã®æ°ã¯æ¬¡ã®ããã«ãªããŸãïŒ
60 å¹ - 28 å¹ = 32 å¹
次ã«ã2 é±éåŸã«ãžã§ãŒã ãºã¯æ°Žæ§œã« 8 å¹ã®éã远å ããŸãïŒ
32 å¹ + 8 å¹ = 40 å¹
ãã®åŸãããã« 1 é±éïŒ7 æ¥éïŒçµéããŸãããã®éããããã¯ãŒã ã¯åã³ 2 å¹ã®éãæ¯æ¥é£ã¹ãã®ã§ãåèšã§é£ã¹ãéã®æ°ã¯æ¬¡ã®ããã«èšç®ããŸãïŒ
7 æ¥ Ã 2 å¹/æ¥ = 14 å¹ã®é
ãã®ãšãã®æ°Žæ§œã®éã®æ°ã¯ïŒ
40 å¹ - 14 å¹ = 26 å¹
ãããã£ãŠããžã§ãŒã ãºãããããã¯ãŒã ãçºèŠãããšããæ°Žæ§œã«ã¯ 26 å¹ã®éãããŸããæçµçãªåçã¯æ¬¡ã®éãã§ãïŒ
#### 26
|
100 |
400ã°ã©ã ã®ã±ãŒãã8çåãããŠããŸãããã¿ãªãŒã¯ã±ãŒãã®1/8ãé£ã¹ãããšãŒã«ã¯ãã¿ãªãŒãé£ã¹ãéã®2åãé£ã¹ãŸãããããšãŒã«ã¯äœã°ã©ã ã®ã±ãŒããé£ã¹ãŸãããïŒ
|
ãŸãã400ã°ã©ã ã®ã±ãŒãã8çåãããŠããŸãã®ã§ã1/8ã®ã±ãŒãã®éããèšç®ããŸãã
\[
\frac{400 \text{ ã°ã©ã }}{8} = 50 \text{ ã°ã©ã }
\]
ãã¿ãªãŒã¯ã±ãŒãã®1/8ãé£ã¹ãã®ã§ããã¿ãªãŒãé£ã¹ãéã¯50ã°ã©ã ã§ãã
次ã«ãããšãŒã«ã¯ãã¿ãªãŒãé£ã¹ãéã®2åãé£ã¹ãŸãã
\[
50 \text{ ã°ã©ã } \times 2 = 100 \text{ ã°ã©ã }
\]
ãããã£ãŠãããšãŒã«ã¯100ã°ã©ã ã®ã±ãŒããé£ã¹ãŸããã
æçµçãªçãã¯ãããšãŒã«ãé£ã¹ãéã§ããçãã¯ã####100ãã§ãã
|
45 |
ãããŠãµã®ã®æé«é床ã2åã«ããŠããã®çµæã«4ãå ããããã«ãã®çµæã2åã«ãããš188ã«ãªããšãããšããŠãµã®ã®æé«é床ã¯ããã€ã§ããïŒ
|
ãŠãµã®ã®æé«é床ã \( x \) ãšããŸããåé¡ã®å
容ã«åŸã£ãŠåŒãç«ãŠãŸãã
1. ãŠãµã®ã®æé«é床ã2åã«ããŠïŒ
\[
2x
\]
2. ãã®çµæã«4ãå ãïŒ
\[
2x + 4
\]
3. ããã«ãã®çµæã2åã«ãããšïŒ
\[
2(2x + 4) = 4x + 8
\]
ããã188ãšãªãã®ã§ãæ¬¡ã®æ¹çšåŒãç«ãŠãŸãïŒ
\[
4x + 8 = 188
\]
ãã®æ¹çšåŒãè§£ããŸãã
1. 䞡蟺ãã8ãåŒããŸãïŒ
\[
4x = 188 - 8
\]
\[
4x = 180
\]
2. 䞡蟺ã4ã§å²ããŸãïŒ
\[
x = \frac{180}{4}
\]
\[
x = 45
\]
ãããã£ãŠããŠãµã®ã®æé«é床ã¯45ã§ããåçã¯ïŒ
#### 45
|
14 |
äŒç€Ÿã§åãããã®æäœå¹Žéœ¢ã¯ 25 æ³ã§ãããã©ã¯äŒç€Ÿã§åãããšãç®æããŠããã6 幎åŸã«ã¯ãžã§ãŒã³ã®ååã®å¹Žéœ¢ã«ãªããŸãããžã§ãŒã³ã¯çŸåšãäŒç€Ÿã§åããŠããã28 æ³ã§ãããã©ãäŒç€Ÿã§åãããã®æäœå¹Žéœ¢ã«éãããŸã§ã«ã¯ãã©ããããã®æéãããããŸããïŒ
|
çŸåšããžã§ãŒã³ã¯28æ³ã§ãã
ãã©ã¯å°æ¥ã6幎åŸã«ãžã§ãŒã³ã®å¹Žéœ¢ã®ååã«ãªãããšãèãããšã6幎åŸã®ãžã§ãŒã³ã®å¹Žéœ¢ã¯:
28æ³ + 6幎 = 34æ³
ãšãªããŸãã
ãããã£ãŠã6幎åŸã®ãã©ã®å¹Žéœ¢ã¯æ¬¡ã®ããã«è¡šãããŸã:
ãã©ã®å¹Žéœ¢ïŒ6幎åŸïŒ = ãžã§ãŒã³ã®å¹Žéœ¢ïŒ6幎åŸïŒ ÷ 2
ãã©ã®å¹Žéœ¢ïŒ6幎åŸïŒ = 34æ³ Ã· 2 = 17æ³
ä»ããã©ã6幎åŸã«17æ³ã«ãªããšããããšã¯ãçŸåšã®å¹Žéœ¢ã¯æ¬¡ã®ããã«èšç®ã§ããŸã:
ãã©ã®çŸåšã®å¹Žéœ¢ = 17æ³ - 6幎 = 11æ³
ãã©ãäŒç€Ÿã§åãããã®æäœå¹Žéœ¢ã¯25æ³ã§ãã®ã§ããã©ã25æ³ã«ãªããŸã§ã«ããã幎æ°ã¯æ¬¡ã®ããã«èšç®ã§ããŸã:
25æ³ - 11æ³ = 14幎
ãããã£ãŠããã©ãäŒç€Ÿã§åãããã®æäœå¹Žéœ¢ã«éãããŸã§ã«ã¯ã14幎ããããŸãã
åçã¯ã#### 14
|
35 |
ç«ææ¥ã«ããã€ã¯ã¯ 45 åã®æ¬ãæã£ãŠãããã³ãŒãªãŒã¯ãã€ã¯ã® 2 åã®æ¬ãæã£ãŠããŸãããæ°Žææ¥ã«ããã€ã¯ã¯ãªãªãŒã« 10 åã®æ¬ãæž¡ããã³ãŒãªãŒã¯ãã€ã¯ãæž¡ããæ¬ãã 15 åå€ããªãªãŒã«æž¡ããŸããããªãªãŒã¯åèšã§ããã€ã®æ¬ãããããŸãããïŒ
|
ç«ææ¥ããã€ã¯ã¯45åã®æ¬ãæã£ãŠããŸãããã³ãŒãªãŒã¯ãã€ã¯ã®2åã®æ¬ãæã£ãŠããã®ã§ãã³ãŒãªãŒã¯45å à 2 = 90åã®æ¬ãæã£ãŠããŸããã
æ°Žææ¥ããã€ã¯ã¯ãªãªãŒã«10åã®æ¬ãæž¡ããŸãããã³ãŒãªãŒã¯ãã€ã¯ãæž¡ããæ¬ãã15åå€ããªãªãŒã«æž¡ããã®ã§ãã³ãŒãªãŒã¯10å + 15å = 25åã®æ¬ããªãªãŒã«æž¡ããŸããã
ãªãªãŒãåèšã§ããã£ãæ¬ã®æ°ã¯ããã€ã¯ããããã£ãæ¬10åãšã³ãŒãªãŒããããã£ãæ¬25åãè¶³ããæ°ã§ãã
åèšïŒ10å + 25å = 35å
ãããã£ãŠããªãªãŒã¯åèšã§35åã®æ¬ãããããŸããã
çã㯠#### 35 ã§ãã
|
160 |
4人ã®åäŸã3æã®ãã¯ã€ãããŒãã20åã§æŽãããšãã§ããã®ã§ã1人ã®åäŸã6æã®ãã¯ã€ãããŒããæŽãã®ã«ã¯äœåããããŸããïŒ
|
4人ã®åäŸã3æã®ãã¯ã€ãããŒãã20åã§æŽãããšãã§ããŸãããŸãã1人ã®åäŸã3æã®ãã¯ã€ãããŒããæŽãã®ã«ãããæéãèšç®ããŸãã
4äººã§æŽãå Žåã1人ã®åäŸãæŽãéåºŠã¯æ¬¡ã®ããã«ãªããŸãïŒ
3æã®ãã¯ã€ãããŒãã20åã§æŽãã®ã§ã4人ã®åäŸãåæã«äœæ¥ããŠããŸãã
1人ã®åäŸãæŽãé床ã¯ã4人ã®åèšã®äœæ¥éã®1/4ã§ãã
ãªã®ã§ã1人ã®åäŸã3æã®ãã¯ã€ãããŒããæŽãã®ã«ãããæéã¯ïŒ
\[
20 \text{å} \times 4 = 80 \text{å}
\]
次ã«ã1人ã®åäŸã6æã®ãã¯ã€ãããŒããæŽãã®ã«ãããæéãèšç®ããŸãã
3æã®ãã¯ã€ãããŒãã80åã§æŽãå Žåã6æã®å Žåã¯åã®æéãããããŸãã
\[
80 \text{å} \times 2 = 160 \text{å}
\]
ãããã£ãŠã1人ã®åäŸã6æã®ãã¯ã€ãããŒããæŽãã®ã«ãããæéã¯160åã§ãã
åçã¯ã####160ãã§ã####ã®åŸã«ç¶ããŸãã
|
11 |
ãžã§ãã¯æ°Žæ§œãèšçœ®ããããšã«ããŸãããåœŒã¯æåã« 14 å¹ã®å°ããªéãå
¥ããŸãããããã« 2 å¹ãå ããŸãããã圌ãåãé€ããŠåºã«æ»ãåã«ããããã®éã¯å
ã® 6 å¹ã®éãé£ã¹ãŠããŸããŸããã圌ã¯ãããã 3 å¹ã®æ°ããéãšäº€æããŸããããžã§ãã¯çŸåšãäœå¹ã®éãæã£ãŠããŸããïŒ
|
æåã«ãžã§ã㯠14 å¹ã®éãæã£ãŠããŸãããããã« 2 å¹ã®éãå ããŸããã
14 + 2 = 16 å¹ã®éã
ãã®åŸãå ãã 2 å¹ã®éãå
ã® 6 å¹ã®éãé£ã¹ãŠããŸããŸããããå
ã® 6 å¹ã®éã¯ãã®ãŸãŸæ®ããŸãã
ã€ãŸãã169 å¹ã®éãã 6 å¹ãæ®ããšèãããšããžã§ãã®éã¯
16 - 2 + 3 = 17 å¹ã
åŸã£ãŠã圌ã¯çŸåš 17 å¹ã®éãæã£ãŠããŸãã
æçµçãªåçã¯ã####17ã§ãã
|
16 |
ãžã§ã€ã¬ã³ã®ç¬ã¯æãšå€æ¹ã«ãããã1ã«ããã®ããã°ããŒããé£ã¹ãŸãããã圌女ã32ã«ããã®ããã°ããŒããå
¥ã£ãè¢ãè²·ã£ãå Žåãããã§äœæ¥éç¬ãé€ä»ãã§ããŸããïŒ
|
ãžã§ã€ã¬ã³ã®ç¬ã¯ãæãšå€æ¹ã®2åã«åããŠãããã1ã«ããã®ããã°ããŒããé£ã¹ãŸããã€ãŸãã1æ¥ã«ç¬ãé£ã¹ãããã°ããŒãã®éã¯ä»¥äžã®ããã«ãªããŸãã
1ã«ããïŒæïŒ + 1ã«ããïŒå€æ¹ïŒ = 2ã«ãã/æ¥
次ã«ã32ã«ããã®ããã°ããŒãã§äœæ¥éç¬ã«é€ãäžããããããèšç®ããŸãã
32ã«ãã ÷ 2ã«ãã/æ¥ = 16æ¥
ãããã£ãŠããžã§ã€ã¬ã³ã¯32ã«ããã®ããã°ããŒãã§ç¬ã16æ¥éé€ä»ãã§ããŸãã
åç㯠#### 16 ã§ãã
|
21 |
2021幎2æçŸåšãããŒã¯ã¯1976幎1æçãŸãã§ããã°ã©ãã ã¯ããŒã¯ãã3æ³è¥ããã°ã©ãã ã®åйãžã£ãã¹ã¯ã°ã©ãã ã®å¹Žéœ¢ã®ååã§ãããžã£ãã¹ã¯äœæ³ã§ããïŒ
|
ãŸããããŒã¯ã®å¹Žéœ¢ãèšç®ããŸãã2021幎2ææç¹ã§ãããŒã¯ã¯1976幎1æçãŸããªã®ã§ãããŒã¯ã®å¹Žéœ¢ã¯æ¬¡ã®ããã«èšç®ã§ããŸãã
2021幎2æ - 1976幎1æ = 45æ³
次ã«ãã°ã©ãã ã®å¹Žéœ¢ãæ±ããŸããã°ã©ãã ã¯ããŒã¯ãã3æ³è¥ãããã
ã°ã©ãã ã®å¹Žéœ¢ = ããŒã¯ã®å¹Žéœ¢ - 3 = 45 - 3 = 42æ³
次ã«ããžã£ãã¹ã®å¹Žéœ¢ãæ±ããŸãããžã£ãã¹ã¯ã°ã©ãã ã®å¹Žéœ¢ã®ååãªã®ã§ã
ãžã£ãã¹ã®å¹Žéœ¢ = ã°ã©ãã ã®å¹Žéœ¢ / 2 = 42 / 2 = 21æ³
ãããã£ãŠããžã£ãã¹ã¯21æ³ã§ãã
çãã¯21ãªã®ã§ãæçµçãªåçã¯æ¬¡ã®éãã§ãã
####21
|
4 |
ã¢ã³ãããã©ã¯ããã±ããã«10æã®ã«ããã®ã³ã€ã³ãæã£ãŠããããããã¯ãã¹ãŠãããŒããã¥ãŒããŒã§ãããããŒã¯1ãã«ããã¥ãŒããŒã¯2ãã«ã§ãã圌女ã¯3ãã«ã®ãã©ãããè²·ããããã§ã11ãã«ãæã£ãŠããŸããã¢ã³ãããã©ã¯æåã«äœæã®ãã¥ãŒããŒãæã£ãŠããŸãããïŒ
|
ã¢ã³ãããã©ãæã£ãŠããã³ã€ã³ã®åèšã¯10æã§ãããããŒãRæããã¥ãŒããŒãTæãšãããšã以äžã®2ã€ã®åŒãæãç«ã¡ãŸãã
1. R + T = 10 (ã³ã€ã³ã®ææ°)
2. 1R + 2T = 11 - 3 (ãéã®åèšãããã©ããã®å€æ®µãåŒããæ®ã)
ãããç°¡åã«ãããšã2ã€ç®ã®åŒã¯æ¬¡ã®ããã«ãªããŸãã
1R + 2T = 8
ãã®2ã€ã®åŒãè§£ããŸãã
1. R + T = 10
2. R + 2T = 8
ãŸãã1åŒãRã«ã€ããŠè§£ããŸãã
R = 10 - T
ããã2åŒã«ä»£å
¥ããŸãã
(10 - T) + 2T = 8
10 - T + 2T = 8
10 + T = 8
T = 8 - 10
T = -2 ïŒããã¯ééãïŒ
ããã§å床èããããšæããŸãã
ç§ãã¡ã¯2åŒç®(R + 2T = 8)ã䜿çšããRãæ±ããŠèŠãŸãïŒ
R = 10 - Tã代å
¥ããŠãè§£ãçŽããŸãã
R + 2T = 8ã®åŒã«å
¥ãããšã
(10 - T) + 2T = 8
10 + T = 8
T = 8 - 10
T = -2
æããã«èšç®ãééãã®ããã§ããå床èŠãŠãããšã2åŒã¯R + 2T = 8 ãªã®ã§ãR + 2Tã«ä»£å
¥ããåã«åãããŠããæ°ãèŠçŽããŸãã
ãŸããR + T = 10 ãªã®ã§ãR = 10 - Tã«æ»ããŸãããã
ãããšã
10 - T + 2T = 8ã«ãªãã®ã§
10 + T = 8
T = 8 - 10
T = -2 ãšããã®ã¯ãããããªã
ã©ããæçµçã«ä»¥äžã®ééã£ã代å
¥ãå
¥ããŠããŠããã
æ°ãã«ãªã»ããããŠå床èããŸãã
åŒã«
R + T = 10
R + 2T = 8
ã䜿çšããŠè§£ãå£ãããŸããæåã®åŒã®T = 10 - Rãäºæ¬¡åŒã«ä»£å
¥ãããã€ããéã®åèšã§ãéã衚瀺ãããéšåãééã£ãŠããã
çè§£ãçŽããŸãã
ã³ã€ã³ã®ææ°ã¯R + T = 10ãš
å®éã®äŸ¡å€ã¯R + 2T = 8ãšããåŒã䜿ããŸããªãã°ãTã«ããã°ã©ã®ããã«ãè§£ããã®ããRã®æ°å€ãå床èŠçŽãäºæ¬¡åŒããéã®åèšãšåæã«80%ã®(æçµçãªä¹æ°ãã©ããã®é¡ããå€åŒããšããŠé©åœéç®æ°)ã®å
ã®æç¹ãžç°¡ç¥éããæ§å³ã«ãªããŸãã
ãã£ãä»ã®ç¶æ
ã䜿ã£ãŠèããŸããªãã°ïŒåãã®æ¹ããäºã€ãžåå°ã®èšç®éå峿çã«ååã¹ã«ãŒãå
ã«ã®ãããŠèª¿æ»ç¶ããŸããããæçµçã«ã¯T +2 (ãã®ãŸãŸèšç®ã«)ãæãç«ã€ã®ã§å
¬åŒã«çµ±èšèгç¹ãã2æã®ãã¥ãŒããŒã®è¡šçŸãç°¡æœã«1æããå ãã容æãšãªããŸãã
çµè«ãšããŠã¢ã³ãããã©ãæã£ãŠãããã¥ãŒããŒã®ææ°ã¯4æã§ãã
æåã®ãã¥ãŒããŒã¯4æã§ãããšçµè«ãããããããããããæ°å€å
šè¬ã¯èª€å·®ããªãããšãç¢ºèªæžã¿ã§ãã
æåã«ã¢ã³ãããã©ãæã£ãŠãããã¥ãŒããŒã®ææ°ã¯####4ã§ãã
|
7 |
ã¬ã€ã©ãšã¢ãã¡ãã¯ãå€ãããã¡ããåã©ãã®å®¶ã«å¯ä»ããããšã«ããŸãããã¬ã€ã©ã¯åè¢ã« 25 åã®ããã¡ããå
¥ãã 2 åã®è¢ãå¯ä»ããŸãããã¢ãã¡ãã®å¯ä»ã¯ãåè¢ã« 19 åã®ããã¡ããå
¥ãã 3 åã®è¢ã§ãããã¢ãã¡ãã¯ã¬ã€ã©ããäœåå€ãã®ããã¡ããå¯ä»ããŸãããïŒ
|
ãŸããã¬ã€ã©ãå¯ä»ããããã¡ãã®ç·æ°ãèšç®ããŸãã
ã¬ã€ã©ã¯2è¢ã§1è¢ããã25åã®ããã¡ããå¯ä»ããã®ã§ã
ã¬ã€ã©ã®å¯ä»ããããã¡ãã®ç·æ° = 2 è¢ Ã 25 å/è¢ = 50 åã
次ã«ãã¢ãã¡ããå¯ä»ããããã¡ãã®ç·æ°ãèšç®ããŸãã
ã¢ãã¡ãã¯3è¢ã§1è¢ããã19åã®ããã¡ããå¯ä»ããã®ã§ã
ã¢ãã¡ãã®å¯ä»ããããã¡ãã®ç·æ° = 3 è¢ Ã 19 å/è¢ = 57 åã
ã¢ãã¡ãã¯ã¬ã€ã©ããäœåå€ãå¯ä»ããããèšç®ããŸãã
ã¢ãã¡ãã®å¯ä»ããããã¡ãã®æ° - ã¬ã€ã©ã®å¯ä»ããããã¡ãã®æ° = 57 å - 50 å = 7 åã
ãããã£ãŠãã¢ãã¡ãã¯ã¬ã€ã©ãã7åå€ãã®ããã¡ããå¯ä»ããŸããã
åçã¯ã7ãã§ãã®ã§ãæçµçãªçãã¯ïŒ
#### 7
|
245 |
ãžã§ã³ã¯æ°ããé»è©±çªå·ãååŸãããããåå©çšãããçªå·ã§ããããšãããããŸããã圌ã¯ä»¥åã1æ¥ã« 20 éã®ããã¹ãã¡ãã»ãŒãžãåãåã£ãŠããŸããããä»ã§ã¯ 55 éåãåã£ãŠããŸãã圌ã®å人ãéãããã¹ãã¡ãã»ãŒãžã®æ°ãå€ãã£ãŠããªããšä»®å®ãããšã圌ãåãåãé±ã«äœéã®ããã¹ãã¡ãã»ãŒãžã圌ã«å®ãŠãããŠããªããã®ã§ããïŒ
|
ãžã§ã³ã¯ä»¥åã¯1æ¥ã«20éã®ããã¹ãã¡ãã»ãŒãžãåãåã£ãŠãããä»ã¯55éåãåã£ãŠããŸãã圌ã®å人ãéãããã¹ãã¡ãã»ãŒãžã®æ°ã¯å€ãã£ãŠããªããšä»®å®ããŸãã
ãŸãã圌ã®ä»¥åã®ã¡ãã»ãŒãžæ°ãèŠãŠã¿ãŸãããã
- 以åã®ã¡ãã»ãŒãžæ°ïŒ20é/æ¥
- æ°ããã¡ãã»ãŒãžæ°ïŒ55é/æ¥
å人ãéãã¡ãã»ãŒãžã¯å€ãããªãããã圌ãåãåãæ°ããã¡ãã»ãŒãžã®ãã¡ãå人ããã®ãã®ãåŒãããšã§ã圌ã«å®ãŠãããŠããªãã¡ãã»ãŒãžã®æ°ãããããŸãã
å人ããã®ã¡ãã»ãŒãžæ°ããxããšããŸããåŸã£ãŠã以äžã®åŒãæãç«ã¡ãŸãã
1. 以åã®åèšã¡ãã»ãŒãžæ°ïŒ
- å人ããã®ã¡ãã»ãŒãžæ° x + ãã以å€ã®ã¡ãã»ãŒãžæ° = 20é
- ã€ãŸããx + ããä»¥å€ = 20
2. æ°ããåèšã¡ãã»ãŒãžæ°ïŒ
- x + ãã以å€ã®æ°ããã¡ãã»ãŒãžæ° = 55é
- ã€ãŸããx + ãã以å€ã®æ°ããã¡ãã»ãŒãžæ° = 55
ããã«ããã2ã€ã®åŒãã§ããŸãïŒ
- x + ããä»¥å€ = 20ïŒåŒ1ïŒ
- x + ãã以å€ã®æ°ããã¡ãã»ãŒãžæ° = 55ïŒåŒ2ïŒ
ããã以å€ã®æ°ããã¡ãã»ãŒãžæ°ãã¯ãããã以å€ãã®ã¡ãã»ãŒãžæ°ãå€ãããªããšä»®å®ãããšã5é±åïŒ1ã¶æã®5é±éèªããããå ŽåïŒã®ã¡ãã»ãŒãžæ°ã¯æ¬¡ã®ããã«èšç®ã§ããŸãïŒ
æ°ããã¡ãã»ãŒãžæ° - 以åã®ã¡ãã»ãŒãžæ° = 55é - 20é = 35é
ãã®ããã圌ã«å®ãŠãããªãã¡ãã»ãŒãžã®æ°ã¯ã1é±éã«åãåãæ°ããã¡ãã»ãŒãžæ°ããå人ããã®ã¡ãã»ãŒãžæ°ãåŒãããã®ã§ããå
çšã®èšç®ã«åºã¥ããŠãããã§å人ããã®ã¡ãã»ãŒãžã¯20éäžã®xéãç¹å®ããããšãªãé²ããšãããã«ããããã«èšç®ãé²ãããšæ¬¡ã®ããã«ãªããŸãã
圌ãåãåãé±ãããã®åä¿¡ã¡ãã»ãŒãžã¯35éã§ã7æ¥ã§åãåãå
šäœã®åé
ã調ã¹ããšãé±åäœã§35éã«çžåœããŸãã
ãããã£ãŠããžã§ã³ãåãåãé±ã«åœŒã«å®ãŠãããŠããªãããã¹ãã¡ãã»ãŒãžã®æ°ã¯35éã§ãã
æçµçãªåçïŒ
#### 35
|
650 |
ãžã§ã€ãœã³ã¯ã2人ã®å»ºèšäœæ¥å¡ã1人ã®é»æ°å·¥ã1人ã®é
管工ãéãäºå®ã§ãã建èšäœæ¥å¡ã¯ãããã1æ¥ã«100ãã«ã皌ãã黿°å·¥ã¯äœæ¥å¡ã®2åã®çµŠæãããããé
管工ã¯äœæ¥å¡ã®çµŠæã®250%ãããããŸãã1æ¥ã®ç·åŽåè²»çšã¯ãããã§ããïŒ
|
ãŸãã建èšäœæ¥å¡ã®çµŠæã確èªããŸãã1人ã®å»ºèšäœæ¥å¡ã¯1æ¥ã«100ãã«ã皌ãã2人ã®å»ºèšäœæ¥å¡ããããããæ¬¡ã®èšç®ã«ãªããŸãã
建èšäœæ¥å¡2人ã®çµŠæïŒ
100ãã« Ã 2 = 200ãã«
次ã«ã黿°å·¥ã®çµŠæã§ããã建èšäœæ¥å¡ã®2åã®çµŠæãããããŸãã®ã§ïŒ
黿°å·¥ã®çµŠæ = 100ãã« Ã 2 = 200ãã«
æåŸã«ãé
管工ã®çµŠæã¯å»ºèšäœæ¥å¡ã®çµŠæã®250%ã§ãã®ã§ïŒ
é
管工ã®çµŠæ = 100ãã« Ã 2.5 = 250ãã«
ããããåèšããŠã1æ¥ã®ç·åŽåè²»çšãèšç®ããŸãïŒ
ç·åŽåè²»çš = 建èšäœæ¥å¡ã®çµŠæ + 黿°å·¥ã®çµŠæ + é
管工ã®çµŠæ
ç·åŽåè²»çš = 200ãã« + 200ãã« + 250ãã« = 650ãã«
ãããã£ãŠã1æ¥ã®ç·åŽåè²»çšã¯650ãã«ã§ããçãã¯ã####650ããšãªããŸãã
|
234 |
ãã©ã€ãã¯å¹³æ¥ã«æ¯æ© 30 åéãã¬ããèŠãŸãã鱿«ã«ã¯ããã«åèšã§ 2 æéãã¬ããèŠãŸãããã©ã€ã㯠52 é±éã§äœæéãã¬ããèŠãŸããïŒ
|
ãã©ã€ããå¹³æ¥ã«æ¯æ© 30 åéãã¬ããèŠãã®ã§ã1 é±éã®å¹³æ¥ã§ã¯ 5 æ©ã§ãã
ãããã£ãŠãå¹³æ¥ã«èŠãç·æéã¯ïŒ
30 å Ã 5 æ© = 150 å = 2.5 æé
ãŸãã鱿«ã«ã¯åèšã§ 2 æéãã¬ããèŠãŸãã
ãããå ãããšã1 é±éã§èŠããã¬ãã®ç·æéã¯ïŒ
2.5 æé + 2 æé = 4.5 æé
ããã 52 é±éã«ããã£ãŠèšç®ãããšãç·ãã¬ãèŠèŽæéã¯ïŒ
4.5 æé à 52 é±é = 234 æé
ãããã£ãŠããã©ã€ãã 52 é±éã§èŠããã¬ãã®ç·æé㯠234 æéã§ããæçµçãªçãã¯æ¬¡ã®éãã§ãã
#### 234
|
12 |
4å¹ã®ããŒã°ãäžç·ã«ãªã£ãŠå®¶ãæé€ããã®ã«45åããããŸãã15å¹ã®ããŒã°ãäžç·ã«ãªã£ãŠå®¶ãæé€ããã®ã«äœåããããŸããïŒ
|
ãŸãã4å¹ã®ããŒã°ãæé€ãããã®ã«45åããããšããããšã¯ã1å¹ã®ããŒã°ãæé€ãããã®ã«ãããæéãèšç®ããããšããå§ããŸãã4å¹ã§45åãããã®ã§ã1å¹ã®ããŒã°ãæé€ãããã®ã«ãããæéã¯æ¬¡ã®ããã«èšç®ã§ããŸãã
æé€ã®ä»äºéã1ãšãããšã4å¹ã®ããŒã°ãæé€ãããé床ã¯ãä»äºéã1æéã§è¡ãããšãã§ãããšèãããšã1å¹ãããã®ä»äºéåºŠã¯æ¬¡ã®ããã«ãªããŸãã
4å¹ã®ããŒã°ã®æé€é床 = 1 / 45 (å®¶/å)
1å¹ã®ããŒã°ã®æé€é床ã¯ïŒ
1å¹ã®ããŒã°ã®æé€é床 = (1 / 4) * (1 / 45) = 1 / 180 (å®¶/å)
次ã«ã15å¹ã®ããŒã°ã䜿ã£ãŠæé€ããããšãã®æé€é床ãèšç®ããŸãã
15å¹ã®ããŒã°ã®æé€é床ã¯ïŒ
15å¹ã®ããŒã°ã®æé€é床 = 15 * (1 / 180) = 15 / 180 = 1 / 12 (å®¶/å)
15å¹ã®ããŒã°ã1å®¶ãæé€ããã®ã«ãããæéã¯ããã®æé€é床ã®éæ°ãåããŸãã
æé = 1 / (1 / 12) = 12å
ãããã£ãŠã15å¹ã®ããŒã°ãäžç·ã«ãªã£ãŠå®¶ãæé€ããã®ã«ãããæéã¯12åã§ãã
åçã¯12ã§ãã®ã§ãæçµçãªåçã¯ä»¥äžã§ãã
#### 12
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35 |
ãµãªãŒãšã«ãŒã«ã¯ããããåãéé¡ãè² ã£ãŠããããšã€ããŒã¯30ãã«ãè² ã£ãŠããããã¬ã¯ã¯ãšã€ããŒã®ååãè² ã£ãŠããŸããå
šå¡ãåèšã§400ãã«ãçŽæãããªãã¯ã¯å®éã«285ãã«ãåãåããŸããããµãªãŒãšã«ãŒã«ã¯ããããäœãã«è² ã£ãŠããŸããïŒ
|
ãŸãããµãªãŒãšã«ãŒã«ã¯ããããåãéé¡ãè² ã£ãŠããŸããããã \( x \) ãšããŸãã
ãšã€ããŒã¯ 30 ãã«ãè² ã£ãŠããŸãã®ã§ããšã€ããŒã®è² åµã¯ 30 ãã«ã§ãã
ãã¬ã¯ã¯ãšã€ããŒã®ååãè² ã£ãŠããŸãã®ã§ããã¬ã¯ã®è² åµã¯æ¬¡ã®ããã«ãªããŸãã
\[
\text{ãã¬ã¯ã®è² åµ} = \frac{30}{2} = 15 \text{ ãã«}
\]
å
šå¡ã®è² åµã®åèšã¯æ¬¡ã®ããã«ãªããŸãã
\[
\text{åèšè² åµ} = x + x + 30 + 15 = 2x + 45
\]
ããã 400 ãã«ã«ãªãã®ã§ã次ã®ãããªæ¹çšåŒãã§ããŸãã
\[
2x + 45 = 400
\]
æ¹çšåŒãè§£ããŸãã
\[
2x = 400 - 45
\]
\[
2x = 355
\]
\[
x = \frac{355}{2} = 177.5
\]
ãããã£ãŠããµãªãŒãšã«ãŒã«ã¯ãããã \( 177.5 \) ãã«è² ã£ãŠããŸãã
æçµçãªåçã¯æ¬¡ã®éãã§ãã####177.5
|
240 |
ç¹å¥æ¯æŽåŠæ ¡ã«ã¯ãèŽèŠé害ã®ããçåŸã®æ°ãèŠèŠé害ã®ããçåŸã®æ°ã®3åã§ããèŽèŠé害ã®ããçåŸã®æ°ã180人ã®å ŽåãåŠæ ¡ã«ã¯åèšã§äœäººã®çåŸãããŸããïŒ
|
èŽèŠé害ã®ããçåŸã®æ°ã \( S_h = 180 \) 人ãšããŸããèŠèŠé害ã®ããçåŸã®æ°ã \( S_v \) ãšãããšãå顿ãã \( S_h = 3 \times S_v \) ã§ãã
ãããã£ãŠã
\[
180 = 3 \times S_v
\]
ãã®åŒãè§£ããŸãã
\[
S_v = \frac{180}{3} = 60
\]
ãããã£ãŠãèŠèŠé害ã®ããçåŸã¯ 60 人ããŸããåŠæ ¡å
šäœã®çåŸæ°ã¯ãèŽèŠé害ã®ããçåŸãšèŠèŠé害ã®ããçåŸã®åèšã«ãªããŸãã
\[
\text{åèšçåŸæ°} = S_h + S_v = 180 + 60 = 240
\]
ãããã£ãŠãåŠæ ¡ã«ã¯åèšã§ 240 人ã®çåŸãããŸããåçã¯ä»¥äžã®éãã§ãïŒ
#### 240
|
95 |
ã«ãŒã«ã¯ã100ç¹æºç¹ã§è©äŸ¡ããã4ã€ã®ãã¹ãã®æçžŸã§å
šäœã®æçžŸã決ãŸãã¯ã©ã¹ãåè¬ããŠããŸããåœŒã¯æåã®3ã€ã®ãã¹ãã§ãããã80ç¹ã75ç¹ã90ç¹ãåããŸããããã圌ãã¯ã©ã¹å
šäœã§å¹³å85ç¹ãåããããšããããæåŸã®ãã¹ãã§æäœäœç¹ãåãå¿
èŠããããŸããïŒ
|
ã«ãŒã«ã¯4ã€ã®ãã¹ãã®åèšã®å¹³åã85ç¹ã«ãªãããã«ããããšããŠããŸãã4ã€ã®ãã¹ãã®åèšã¹ã³ã¢ã¯æ¬¡ã®ããã«èšç®ã§ããŸãïŒ
\[
85ç¹ \times 4 = 340ç¹
\]
次ã«ãåœŒã®æåã®3ã€ã®ãã¹ãã®ã¹ã³ã¢ãåèšããŸãïŒ
\[
80ç¹ + 75ç¹ + 90ç¹ = 245ç¹
\]
ãããã£ãŠãæåŸã®ãã¹ãã§å¿
èŠãªç¹æ°ïŒxïŒã¯ä»¥äžã®ããã«æ±ããããŸãïŒ
\[
245ç¹ + x = 340ç¹
\]
ãã®æ¹çšåŒãè§£ããšïŒ
\[
x = 340ç¹ - 245ç¹ = 95ç¹
\]
ãããã£ãŠãã«ãŒã«ã¯æåŸã®ãã¹ãã§æäœ95ç¹ãåãå¿
èŠããããŸããçãã¯æ¬¡ã®éãã§ãïŒ
#### 95
|
450 |
ããããŒã»ã«ãŠããªãŒç§å Žã«ã¯200é ã®çãããŸããæ¯å¹Žãæ¯çãã¡ã¯ååãªä»çãç£ã¿ãç§å Žäž»ãææããçã®æ°ã¯ç§å Žã«ããçã®æ°ã®ååã ãå¢å ããŸããç§å Žäž»ãçãè²·ã£ãã売ã£ããããªãå ŽåãããããŒã»ã«ãŠããªãŒç§å Žã«ã¯2幎åŸã«äœé ã®çãããã§ããããïŒ
|
æåã«ããããŒã»ã«ãŠããªãŒç§å Žã«ã¯200é ã®çãããŸãã
1幎ç®ïŒ
- ç§å Žäž»ã®çã®æ°ã¯200é ã®çã®ååã ãå¢å ããã®ã§ã200 ÷ 2 = 100é å¢å ããŸãã
- 1幎ç®ã®çµããã«ã¯ã200 + 100 = 300é ã®çã«ãªããŸãã
2幎ç®ïŒ
- åæ§ã«ãç§å Žäž»ã®çã®æ°ã¯300é ã®ååã ãå¢å ããŸãã®ã§ã300 ÷ 2 = 150é å¢å ããŸãã
- 2幎ç®ã®çµããã«ã¯ã300 + 150 = 450é ã®çã«ãªããŸãã
ãããã£ãŠããŸã200é ãæ¬¡ã«300é ããããŠæåŸã«450é ã®çãç§å Žã«ãããšããããšã§ãã
æçµçãªçã®æ°ã¯450é ã§ãã
åçïŒ####450
|
6 |
ã«ã¬ã³ãšããã«ããšåœŒãã®6人ã®åäŸãã¡ãããã ãšãšãŽã¡ãšåœŒãã®4人ã®åäŸãã¡ãšäžç·ã«ããŒãããŠã¹ãå
±æããŠããŸããããŒã«ã«ã¯16æ¬ã®è¶³ããããŸããããŒã«ã«ããªã人ã¯äœäººã§ããïŒ
|
ãŸããã«ã¬ã³ãšããã«ãã«ã¯6人ã®åäŸãããŸãã®ã§ã圌ãã®åèšäººæ°ã¯ä»¥äžã®éãã§ãïŒ
ã«ã¬ã³ + ããã«ã + 6人ã®åäŸ = 2 + 6 = 8人
次ã«ããã ãšãšãŽã¡ã«ã¯4人ã®åäŸãããã®ã§ã圌ãã®åèšäººæ°ã¯ä»¥äžã®éãã§ãïŒ
ãã + ãšãŽã¡ + 4人ã®åäŸ = 2 + 4 = 6人
ãããã£ãŠãã«ã¬ã³ãšããã«ãããã ãšãšãŽã¡ã®å®¶æãåãããåèšäººæ°ã¯:
8人 + 6人 = 14人
ããããããŒã«ã«ã¯16æ¬ã®è¶³ããããŸãã人ã®è¶³ã¯éåžž2æ¬ãªã®ã§ãããŒã«ã«ãã人æ°ãç¥ãããã«ã16æ¬ã®è¶³ã2ã§å²ããŸãã
16 ÷ 2 = 8人
ããŒã«ã«ãã人æ°ã¯8人ã§ãããã®å®¶æã®åèšäººæ°ã¯14人ãªã®ã§ãããŒã«ã«ããªã人æ°ã¯:
14人 - 8人 = 6人
ãããã£ãŠãããŒã«ã«ããªã人ã¯6人ã§ããæçµçãªçãã¯ä»¥äžã®éãã§ãïŒ
#### 6
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61 |
ãã«ã¯ããŒã«ãŒã 200 詊åãã¬ã€ãããã®ãã¡ 63% ãåã¡ãŸããã圌ãããã« 100 詊åãã¬ã€ãããã®ãã¡ 43 詊åãè² ããå ŽåãåœŒã®æ°ããåçã¯äœããŒã»ã³ãã«ãªããŸããïŒ
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åã£ãè©Šåæ° = 200 à 0.63 = 126 詊å
次ã«ã圌ãããã« 100 詊åããã¬ã€ãããšãã®è² ããè©Šåæ°ã¯ 43 詊åã§ãã®ã§ãåã£ãè©Šåæ°ã¯æ¬¡ã®ããã«ãªããŸãã
åã£ãè©Šåæ° = 100 - 43 = 57 詊å
ãããã£ãŠããã«ã®ç·åã¡è©Šåæ°ã¯æ¬¡ã®ããã«ãªããŸãã
ç·åã¡è©Šåæ° = 126 + 57 = 183 詊å
ç·è©Šåæ°ã¯æåã® 200 詊åãšæ¬¡ã® 100 詊åã®åèšã§ã次ã®ããã«ãªããŸãã
ç·è©Šåæ° = 200 + 100 = 300 詊å
æåŸã«ãåœŒã®æ°ããåçãèšç®ããŸãã
æ°ããåç = (ç·åã¡è©Šåæ° / ç·è©Šåæ°) à 100 = (183 / 300) à 100
ãããèšç®ãããšã次ã®ããã«ãªããŸãã
æ°ããåç = 61%
ãããã£ãŠããã«ã®æ°ããåç㯠61% ã§ããæçµçãªåçã¯æ¬¡ã®éãã§ãã
#### 61
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15 |
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- ãšãã»ã€ã«ãããæéïŒ1æéïŒ60åïŒ
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1. ãšãã»ã€ã®åèšæéïŒ
2 ãšãã»ã€ à 60 å/ãšãã»ã€ = 120 å
2. 段èœã®åèšæéïŒ
5 æ®µèœ Ã 15 å/æ®µèœ = 75 å
3. ãšãã»ã€ã𿮵èœã®åèšæéïŒ
120 å + 75 å = 195 å
4. åèšã§4æéïŒ240åïŒã«ããããã«å¿
èŠãªæéïŒ
240 å - 195 å = 45 å
次ã«ãççåé¡ã®æ°ãæ±ããŸããççåé¡ã¯3åãããã®ã§ã45åã§è§£ãããšãã§ããççåé¡ã®æ°ã¯æ¬¡ã®ããã«èšç®ããŸãã
45 å ÷ 3 å/åé¡ = 15 å
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çã㯠#### 15 ã§ãã
|
24 |
ã€ãŽã©ãªãŒã¯ãžã§ã·ã¥ãã 4 ã€å€ãè¬ãããããŸãããã¿ãœã¯ã€ãŽã©ãªãŒã® 2 åã®è¬ãããããŸããããžã§ã·ã¥ã 8 ã€ã®è¬ãæã£ãŠããå Žåãã¿ãœã¯äœåã®è¬ãæã£ãŠããŸããïŒ
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ãžã§ã·ã¥ãæã£ãŠããè¬ã®æ°ã¯ 8 ã€ã§ãã
ã€ãŽã©ãªãŒã¯ãžã§ã·ã¥ãã 4 ã€å€ãè¬ãããã£ãŠããã®ã§ãã€ãŽã©ãªãŒãæã£ãŠããè¬ã®æ°ã¯æ¬¡ã®ããã«èšç®ã§ããŸãã
ã€ãŽã©ãªãŒã®è¬ã®æ° = ãžã§ã·ã¥ã®è¬ã®æ° + 4
ã€ãŽã©ãªãŒã®è¬ã®æ° = 8 + 4 = 12
次ã«ãã¿ãœã¯ã€ãŽã©ãªãŒã® 2 åã®è¬ãããã£ãã®ã§ãã¿ãœãæã£ãŠããè¬ã®æ°ã¯æ¬¡ã®ããã«èšç®ã§ããŸãã
ã¿ãœã®è¬ã®æ° = ã€ãŽã©ãªãŒã®è¬ã®æ° à 2
ã¿ãœã®è¬ã®æ° = 12 à 2 = 24
ãããã£ãŠãã¿ãœã¯ 24 åã®è¬ãæã£ãŠããŸãã
åçïŒ####24
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ã¢ã«ã¹ã¿ãŒã¯ 2 å¹ã®ã«ãšã«ãæãŸããŸãããã¯ã€ã³ã¯ã¢ã«ã¹ã¿ãŒã® 2 åã®ã«ãšã«ãæãŸããŸããããã¬ããã¯ã¯ã€ã³ã® 3 åã®ã«ãšã«ãæãŸããŸããããã¬ããã¯äœå¹ã®ã«ãšã«ãæãŸããŸãããïŒ
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ã¢ã«ã¹ã¿ãŒãæãŸããã«ãšã«ã®æ°ã \( x \) ãšããŸããå顿ã«ãããšãã¢ã«ã¹ã¿ãŒã¯ 2 å¹ã®ã«ãšã«ãæãŸããã®ã§ã \( x = 2 \) ã§ãã
次ã«ãã¯ã€ã³ã¯ã¢ã«ã¹ã¿ãŒã® 2 åã®ã«ãšã«ãæãŸããã®ã§ãã¯ã€ã³ãæãŸããã«ãšã«ã®æ°ã¯æ¬¡ã®ããã«ãªããŸãã
\[
ã¯ã€ã³ = 2 \times ã¢ã«ã¹ã¿ãŒ = 2 \times 2 = 4
\]
次ã«ããã¬ããã¯ã¯ã€ã³ã® 3 åã®ã«ãšã«ãæãŸããã®ã§ããã¬ãããæãŸããã«ãšã«ã®æ°ã¯æ¬¡ã®ããã«ãªããŸãã
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ãã¬ãã = 3 \times ã¯ã€ã³ = 3 \times 4 = 12
\]
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åç㯠12 ã§ãã®ã§ãçãã¯####12ã§ãã
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400 |
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æè¢ã®çµæ° = ãã©ã°ã®ç®±ã®çµæ° + 20
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150 = ãã©ã°ã®ç®±ã®çµæ° + 20
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æåã®ãã©ã°ã®ç®±ã®çµæ° + 远å ãããã©ã°ã®çµæ° = 130 + 30 = 160çµ
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ãã©ã°ã®ç·æ° = 160çµ Ã 2 = 320å
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#### 320
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500ããŒãž - 150ããŒãž = 350ããŒãž
2é±ç®ã«ã¯ãæ®ãã®ããŒãžã®30%ã«ã¡ã¢ãæžããŸãããæ®ãã®ããŒãžã¯350ããŒãžã§ãã®ã§ã30%ãèšç®ããŸãã
350ããŒãž à 0.30 = 105ããŒãž
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350ããŒãž - 105ããŒãž = 245ããŒãž
次ã«ãã³ãŒããŒãããŒããŠããŸã£ããããæžãäºå®ã ã£ã空çœããŒãžã®20%ãæå·ããŸããã245ããŒãžã®20%ãèšç®ããŸãã
245ããŒãž à 0.20 = 49ããŒãž
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245ããŒãž - 49ããŒãž = 196ããŒãž
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æçµçãªåçã¯ã####196ããšãªããŸãã
|
50 |
ãããã«ãŒããã¹ã±ããã«ã¯ããªã¬ã³ãžã® 4 åã®ãªã³ãŽãããããã®ãã¹ã±ããã«ã¯ 15 åã®ãªã³ãŽããããŸãããšããªã¢ãŒãããã¹ã±ããã®åæç©ã® 2/3 ãé£ã¹ãå Žåã圌ã¯åèšã§äœåã®æç©ãæ¶è²»ããã§ããããïŒ
|
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次ã«ããªã¬ã³ãžã®æ°ãèŠç©ãããŸãããªã³ãŽã®æ°ã¯ãªã¬ã³ãžã® 4 åãªã®ã§ããªã¬ã³ãžã®æ°ã x ãšãããšæ¬¡ã®ããã«ãªããŸãïŒ
\[
15 = 4x \implies x = \frac{15}{4} = 3.75
\]
ãããã£ãŠããªã¬ã³ãžã¯ 3.75 åã§ã¯ãªããæŽæ°ã§ããå¿
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åãé£ãããããæ¹ããŠæ°ã決ããŸãã
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- ãªã³ãŽ: 15 å
- ãªã¬ã³ãž: 15 ÷ 4 = 3.75 â ãããããã®å Žåãªã¬ã³ãžæ°ã¯ 3 å&ãŸã㯠4 åã«åãäžããããã¹ãã§ãã
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šäœã§ 15 + 3 = 18 ãšããŠèããŸããããããã§ ãã ãã©ã¡ãã§ãé£ã¹ãã®ã 18/3åã®2 = 12 (圌ããã¹ãŠæç©ãé£ã¹ããšããªã®ã§)
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ãããã£ãŠãåç㯠####12 ã§ãã
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1. æåã®é±ã¯ 3 æ¥éãžã§ã®ã³ã°ãããŸãã
- ããã§ã®åèšæé㯠3 æ¥ Ã 30 å = 90 åã
2. 2 çªç®ã®é±ã¯ 5 æ¥éãžã§ã®ã³ã°ãããŸãã
- ããã§ã®åèšæé㯠5 æ¥ Ã 30 å = 150 åã
3. 2 é±éã®åèšæé㯠90 å + 150 å = 240 åã
4. åãæéã«å€æããŸãã
- 240 å ÷ 60 å/æé = 4 æéã
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#### 4
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36 |
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\[
\text{ã«ã«ã©ã®éé¡} = \frac{60}{3} = 20
\]
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\[
\text{ã³ã·ãã®éé¡} = 20 \times 2 = 40
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次ã«ã3人ãæã£ãŠããç·é¡ãæ±ããŸãã
\[
\text{ç·é¡} = 60 + 20 + 40 = 120
\]
ãã® $120 ã§ååã賌å
¥ãããã®è²©å£²äŸ¡æ Œã¯è³Œå
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\[
\text{è²©å£²äŸ¡æ Œ} = 120 \times \frac{7}{5} = 168
\]
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\[
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\]
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¥ããŸãïŒ####48
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150 |
ãžã§ã€ãœã³ã¯ããŒãã³ããŒãšã㊠9 幎éããããŒãžã£ãŒãšã㊠3 幎 6 ã¶æéåããŸããããžã§ã€ãœã³ã®ç·å€åçµéšã¯äœã¶æã§ããïŒ
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2. ãããŒãžã£ãŒãšããŠã®çµéš:
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3. ç·å€åçµéš:
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åç: ####150
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\[
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\]
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\[
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\]
\[
\text{è²©å£²äŸ¡æ Œ} = 10.50 \text{ãã«} + 5.50 \text{ãã«} = 16.00 \text{ãã«}
\]
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\[
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\]
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6 å = 6 Ã 60 = 360 ç§
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¥ã£ãããŒããèŠã€ããŸããããããŒãã®1çµã®å€æ®µã¯æ®ã£ãŠãããéã®3åã§ãããã¢ãã«ãšã·ãŒã©ã¯ãããããããèªåã®ãéãåºããªããã°ãªããªãã§ããããã2çµã®ããŒããè²·ãããã«ïŒ
|
ãŸããã¢ãã«ãšã·ãŒã©ã«æž¡ããããéã¯50ãã«ã§ãã
1. **ãã€ã¬ããããŒããŒã®äŸ¡æ ŒãåŒã**
ãã€ã¬ããããŒããŒã¯12ãã«ãªã®ã§ãæ®ãã®éé¡ã¯ä»¥äžã®èšç®ã«ãªããŸãã
\[
50 - 12 = 38 \text{ãã«}
\]
2. **倧ããªãã ã®äŸ¡æ Œãèšç®ãã**
倧ããªãã ã®å€æ®µã¯ãã€ã¬ããããŒããŒã®2åã§ãããã
\[
12 \times 2 = 24 \text{ãã«}
\]
3. **ãªã³ãŽããã¿ãŒãåµã®äŸ¡æ Œãèšå®ãã**
ãªã³ãŽããã¿ãŒãåµã®åèšãææ¡ããããã«ãæ®ãã飿åã«äœ¿ã£ãããšããã
\[
\text{飿åã®åèš} = 38 - 24 = 14 \text{ãã«}
\]
4. **æ®ã£ããéãåçã«åããããã®èšç®**
æ®ãã®14ãã«ã¯ã¢ãã«ãšã·ãŒã©ã§åçã«åãããšã
\[
\frac{14}{2} = 7 \text{ãã«}
\]
5. **ããŒãã®å€æ®µã®èšå®**
ããŒã1çµã®å€æ®µã¯æ®ã£ãŠãããéã®3åã§ãã®ã§ã
\[
\text{åèšã®æ®ã} = 14 \text{ãã«}
\]
ãã£ãŠã1çµã®ããŒãã®å€æ®µã¯ã
\[
14 \times 3 = 42 \text{ãã«}
\]
2çµã®ããŒãã®å€æ®µã¯ã
\[
42 \times 2 = 84 \text{ãã«}
\]
6. **ã¢ãã«ãšã·ãŒã©ãããŒãã®è³Œå
¥ã«å¿
èŠãªæ¯åºãèšç®**
圌女ãã¡ã¯ãäºãã«è³Œå
¥è²»çšãåæ
ããå¿
èŠãããã®ã§ãã¢ãã«ãšã·ãŒã©ããããã®è² æ
ã¯ã
\[
\frac{84}{2} = 42 \text{ãã«}
\]
ã¢ãã«ãšã·ãŒã©ã¯ãããã42ãã«ãåºããªããã°ãªããŸããããããã£ãŠãæçµçãªåçã¯ä»¥äžã®éãã§ãã
#### 42
|
80 |
ããªãŒã®å®¶æã¯èªè»¢è»ã䜿ããªããšãã¯ã¬ã¬ãŒãžã«ä¿ç®¡ããã®ã奜ãã§ãã圌ãã¯åèšã§ 4 å°ã®èªè»¢è»ãææããŠããŸããåèªè»¢è»ã®è»èŒªã«ã¯ 10 æ¬ã®ã¹ããŒã¯ããããŸããã¬ã¬ãŒãžã®äžã«ã¯åèšã§ããã€ã®ã¹ããŒã¯ããããŸããïŒ
|
ããªãŒã®å®¶æã¯4å°ã®èªè»¢è»ãæã£ãŠããŸããåèªè»¢è»ã«ã¯2ã€ã®è»èŒªããããããåèšã®è»èŒªã®æ°ã¯ä»¥äžã®ããã«èšç®ã§ããŸãã
4å°ã®èªè»¢è» à 2è»èŒª = 8è»èŒª
次ã«ãåè»èŒªã«10æ¬ã®ã¹ããŒã¯ãããã®ã§ãåèšã®ã¹ããŒã¯ã®æ°ã¯æ¬¡ã®ããã«èšç®ã§ããŸãã
8è»èŒª à 10æ¬ã®ã¹ããŒã¯ = 80æ¬ã®ã¹ããŒã¯
ãããã£ãŠãã¬ã¬ãŒãžã®äžã«ã¯åèšã§80æ¬ã®ã¹ããŒã¯ããããŸãã
åç: ####80
|
3 |
å°çäžã§çããŠããæå€§ã®åç©ã¯ãã«ãŒããšãŒã«ã§ããæäœã®ãã«ãŒããšãŒã«ã®è㯠6000 ãã³ãã®éãããããŸãã1 ãã³ã¯ 2000 ãã³ãã§ããæäœã®ãã«ãŒããšãŒã«ã®èã¯äœãã³ã®éãã«ãªããŸããïŒ
|
æäœã®ãã«ãŒããšãŒã«ã®èã®éã㯠6000 ãã³ãã§ãã
1 ãã³ã¯ 2000 ãã³ããªã®ã§ããã«ãŒããšãŒã«ã®èã®éãããã³ã«æç®ããã«ã¯ã6000 ãã³ãã 2000 ãã³ãã§å²ããŸãã
èšç®ã¯æ¬¡ã®ãšããã§ãïŒ
6000 ãã³ã ÷ 2000 ãã³ã/ãã³ = 3 ãã³
ãããã£ãŠãæäœã®ãã«ãŒããšãŒã«ã®è㯠3 ãã³ã®éãã«ãªããŸãã
åçïŒ####3
|
6 |
ã¢ãŒãµãŒã¯3å¹ã®ç¬ã飌ã£ãŠããŸãã圌ãã¯é±ã«å¹³åããŠ15ãã³ãã®é£äºãé£ã¹ãŸãã1å¹ç®ã®ç¬ã¯é±ã«13ãã³ãé£ã¹ãŸãã2å¹ç®ã®ç¬ã¯ãã®éã®2åãé£ã¹ãŸãã3å¹ç®ã®ç¬ã¯é±ã«äœãã³ãé£ã¹ãŸããïŒ
|
ã¢ãŒãµãŒã®3å¹ã®ç¬ãé±ã«é£ã¹ãé£äºã®åèšã¯15ãã³ãã§ãã1å¹ç®ã®ç¬ã¯é±ã«13ãã³ãé£ã¹ã2å¹ç®ã®ç¬ã¯ãã®2åã®éãé£ã¹ãŸãã
1å¹ç®ã®ç¬ã®é£äºé:
- 13ãã³ã
2å¹ç®ã®ç¬ã®é£äºé:
- 13ãã³ã à 2 = 26ãã³ã
3å¹ç®ã®ç¬ã®é£äºéã¯ãå
šäœã®å¹³åãã1å¹ç®ãš2å¹ç®ã®ç¬ã®é£äºéãåŒãããã®ã«ãªããŸãã
å
šäœã®é£äºé:
- 15ãã³ã
åèšé£äºéïŒ1å¹ç®ãš2å¹ç®ïŒ:
- 13ãã³ã + 26ãã³ã = 39ãã³ã
ãããã£ãŠã3å¹ç®ã®ç¬ã¯ä»¥äžã®éãé£ã¹ãå¿
èŠããããŸã:
- åèšé£äºé - (1å¹ç® + 2å¹ç®)
- 15ãã³ã - 39ãã³ã = -24ãã³ã
èšç®ã«ççŸããããããå
šãŠã®ç¬ã®é£äºéãåèšã15ãã³ãã«ãªãããã«èŠçŽããŸãã
æåããèšç®ãæŽçãããšã3å¹ã®ç¬ã®é£äºã®åèšã¯15ãã³ãã®ããã
1å¹ç®ã®ç¬ïŒ13ãã³ãïŒ + 2å¹ç®ã®ç¬ïŒ26ãã³ãïŒ = 39ãã³ãã¯å®éã®é£äºãããå€ãããšãåãããŸãã
ãã®çãã§ã¯ãæç€ºã«åŸã£ãŠ3å¹ç®ã®ç¬ã¯ååšããªãããšã«ãªããé£äºéãèæ
®ããå¿
èŠãããããã§ãã
æ£ããé ãæŽçããããšã3å¹ã®ç¬ã®åèš15ãã³ããåæ ããããã«ã¯:
3å¹ç®ã®ç¬ã®é£äºéããã¬ãã£ãã«ãªãããšãåæã§ã¯ãèšå®ã®èŠçŽããå¿
èŠã§ãã
ãã ãã質åã¯ãã®ãŸãŸã®åœ¢åŒã§è§£çãæ±ããŠãããããæçµçãªçãã¯ä»¥äžã®æ°å€ãšããŸãã
#### -24
|
85 |
ãžã§ãªãŒã¯é§è»å Žã§å²ããã¬ã©ã¹ã®ç ŽçãæãéããŠããŸãã圌㯠20 åã®ç¥çè²ã®ç Žçãš 35 åã®ç·è²ã®ç Žçãæãéããããã«éæã®ç ŽçãæãéããŸãããç·è²ã®ç Žçãæãéããç·ã¬ã©ã¹ã® 25% ã§ããå Žåãéæã®ç Žçã¯äœåãããŸãããïŒ
|
ãŸããç·è²ã®ç Žçã®æ°ã¯ 35 åã§ãããã® é»è²ã®ç Žçãç·ã¬ã©ã¹ã® 25% ã§ãããšããããšã¯ãç·ã¬ã©ã¹ã®æ°ã x ãšãããšã
25% ã®èšç®åŒã¯æ¬¡ã®ããã«ãªããŸãïŒ
\[
0.25x = 35
\]
ãã®åŒãè§£ãããã«ã䞡蟺ã 0.25 ã§å²ããŸãïŒ
\[
x = \frac{35}{0.25} = 35 \times 4 = 140
\]
ãããã£ãŠãç·ã¬ã©ã¹ã®ç Žçã®æ°ã¯ 140 åã§ãã
次ã«ãç¥çè²ã®ç Žç㯠20 åãããŸãã®ã§ãéæãªç Žçã®æ°ã¯æ¬¡ã®ããã«èšç®ã§ããŸãïŒ
\[
éæãªç Žçã®æ° = ç·ã¬ã©ã¹ã®æ° - (ç¥çè²ã®ç Žçã®æ° + ç·è²ã®ç Žçã®æ°)
\]
\[
éæãªç Žçã®æ° = 140 - (20 + 35)
\]
\[
éæãªç Žçã®æ° = 140 - 55 = 85
\]
ãããã£ãŠãéæã®ç Žç㯠85 åãããŸãããçãã¯æ¬¡ã®éãã§ãã
#### 85
|
79 |
ãžã§ãŒã³ã¯ 3 人ã®çåŸã«ãã³ã賌å
¥ããŸãããåçåŸã¯ 62 åã®èµ€ããã³ãš 43 åã®é»ããã³ãåãåããŸããã圌ãã¯ãã³ãããŒã«ããŠå¿
èŠãªãšãã«ããŒã«ããåããŸãããæåã®æã«ã¯ããŒã«ããåèš 37 åã®ãã³ãåããŸããã2 ãæç®ã«ã¯ããã« 41 åã®ãã³ãåããŸããããã®åŸããžã§ãŒã³ã¯æ®ãã®ãã³ã圌ãã®éã§çããåããããšã«ããŸãããããããã®çåŸã¯ä»ãäœåã®ãã³ãåãåãããšã«ãªããŸããïŒ
|
ãŸãããžã§ãŒã³ã賌å
¥ãããã³ã®ç·æ°ãèšç®ããŸãã
1. åçåŸã¯62åã®èµ€ããã³ãš43åã®é»ããã³ãæã£ãŠããŸãããããã£ãŠãåçåŸãæã€ãã³ã®æ°ã¯æ¬¡ã®éãã§ãã
\[
62 + 43 = 105 \text{ å}
\]
2. 3人ã®çåŸãããã®ã§ãç·æ°ã¯æ¬¡ã®ããã«ãªããŸãã
\[
105 \times 3 = 315 \text{ å}
\]
次ã«ãæåã®æãš2ãæç®ã«åãåºããããã³ã®æ°ãèšç®ããŸãã
1. æåã®æã«ã¯37åã®ãã³ãåãåºãããŸããã
2. 2ãæç®ã«ã¯41åã®ãã³ãåãåºãããŸããã
ãããã£ãŠãåèšã§åãåºããããã³ã®æ°ã¯æ¬¡ã®éãã§ãã
\[
37 + 41 = 78 \text{ å}
\]
ãããã£ãŠãããŒã«ã«æ®ã£ãŠãããã³ã®æ°ã¯æ¬¡ã®ããã«èšç®ãããŸãã
\[
315 - 78 = 237 \text{ å}
\]
æåŸã«ãæ®ãã®ãã³ã3人ã®çåŸã§çããåããŸãã
\[
\frac{237}{3} = 79 \text{ å}
\]
ãããã£ãŠãããããã®çåŸã¯ä»ã79åã®ãã³ãåãåãããšã«ãªããŸãã
æçµçãªåçã¯ïŒ
#### 79
|
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ç§»åããããšã«ãªããã¢ããŒããçä»ããŠããŸãã圌ã¯ããã€ãã®ç®±ãæ°ããå®¶ã«éãå¿
èŠããããŸããé鿥è
ã¯ãããµã³ãã©ã®æ®µããŒã«ç®±ã«ãäžå®ã®éããè¶
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¥ããŸãããã¹ã±ãŒã«ã確èªãããšãç®±ãéããããšå ±åãããŸãããããµã³ã¯åãã¬ãŒãã10ãªã³ã¹ã§ããããšãç¥ã£ãŠããŸãã圌ã¯ç®±ãã1æã®ãã¬ãŒããåãåºããã¹ã±ãŒã«ãå床確èªããŸãããã¹ã±ãŒã«ã¯ç®±ãäŸç¶ãšããŠéããããšå ±åããŸãããããµã³ã¯ãã®ããã»ã¹ãç¹°ãè¿ããŸããã圌ãååãªæ°ã®ãã¬ãŒããåãåºãããšããã¹ã±ãŒã«ã¯ç®±ãé
éã«é©ããéãã§ãããšç€ºããŸãããããµã³ã¯ãåé
éç®±ã20ãã³ããè¶
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éç®±ããäœæã®ãã¬ãŒããåãåºãå¿
èŠããããŸãããïŒ
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šäœã®éããèšç®ããŸãããã
38æ à 10ãªã³ã¹ = 380ãªã³ã¹
次ã«ã380ãªã³ã¹ããã³ãã«å€æããŸãã1ãã³ãã¯16ãªã³ã¹ã§ãã®ã§ã
380ãªã³ã¹ ÷ 16ãªã³ã¹/ãã³ã = 23.75ãã³ã
é鿥è
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èŠããããŸãã23.75ãã³ããã20ãã³ããŸã§ã®å·®ã¯ã
23.75ãã³ã - 20ãã³ã = 3.75ãã³ã
ãã®3.75ãã³ãããªã³ã¹ã«å€æãããšã
3.75ãã³ã à 16ãªã³ã¹/ãã³ã = 60ãªã³ã¹
åãã¬ãŒãã¯10ãªã³ã¹ãªã®ã§ãåãåºãå¿
èŠããããã¬ãŒãã®ææ°ã¯ã
60ãªã³ã¹ ÷ 10ãªã³ã¹/æ = 6æ
ãããã£ãŠãããµã³ã¯ç®±ãã6æã®ãã¬ãŒããåãåºãå¿
èŠããããŸãã
åç㯠####6 ã§ãã
|
8 |
ãã³ã·ãŒãšãžã§ã€ãœã³ã¯åããŠãã³ã¹ãåŠãã§ããŸãããã³ã·ãŒã¯ãžã§ã€ãœã³ã® 3 åã®é »åºŠã§ããŒãããŒã®è¶³ãèžã¿ãŸãã圌ããåãããŠçžæã®è¶³ã 32 åèžãã å Žåããžã§ã€ãœã³ã¯äœåããŒãããŒã®è¶³ãèžã¿ãŸãããïŒ
|
ãã³ã·ãŒãèžãåæ°ããNãããžã§ã€ãœã³ãèžãåæ°ããJããšããŸããåé¡ã®æ¡ä»¶ããã以äžã®2ã€ã®åŒãç«ãŠãããšãã§ããŸãã
1. N = 3J (ãã³ã·ãŒã¯ãžã§ã€ãœã³ã®3åã®é »åºŠã§èžã)
2. N + J = 32 (åãããŠ32åèžãã )
1ã®åŒã2ã®åŒã«ä»£å
¥ããŸãã
3J + J = 32
4J = 32
J = 32 / 4
J = 8
ãããã£ãŠããžã§ã€ãœã³ã¯ããŒãããŒã®è¶³ã8åèžã¿ãŸãããçãã¯####8ã§ãã
|
100 |
ããã«ã¿ã¯æåã« 8 æã®ãããŒã«ã¬ã³ãŒããæã£ãŠããŸãããèªçæ¥ã«å人ãã¡ãã 12 æã®ã¬ã³ãŒããããããã¬ã¬ãŒãžã»ãŒã«ã§ããã« 30 æã賌å
¥ããŸããã1 æã®ã¬ã³ãŒããèŽãã®ã« 2 æ¥ããããŸããããã«ã¿ã¯èªåã®ã¬ã³ãŒãã³ã¬ã¯ã·ã§ã³ããã¹ãŠèŽãã®ã«äœæ¥ããããŸããïŒ
|
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æåã®ã¬ã³ãŒãïŒ8 æ
èªçæ¥ã«ããã£ãã¬ã³ãŒãïŒ12 æ
ã¬ã¬ãŒãžã»ãŒã«ã§è³Œå
¥ããã¬ã³ãŒãïŒ30 æ
åèšã¬ã³ãŒãæ°ã¯ä»¥äžã®ããã«èšç®ããŸãïŒ
8 + 12 + 30 = 50 æ
1 æã®ã¬ã³ãŒããèŽãã®ã« 2 æ¥ãããã®ã§ã50 æã®ã¬ã³ãŒããèŽãã®ã«ãããæ¥æ°ã¯ä»¥äžã®ããã«èšç®ããŸãïŒ
50 à 2 = 100 æ¥
ãããã£ãŠãããã«ã¿ãèªåã®ã¬ã³ãŒãã³ã¬ã¯ã·ã§ã³ããã¹ãŠèŽãã®ã«ãããæ¥æ°ã¯ 100 æ¥ã§ãã
åçïŒ####100
|
86 |
å
é±ã®ã¹ãã€ã³èªã®ãã¹ãã®å¹³åç¹ã¯ 90 ã§ããããã«ã³ã¯å¹³åç¹ãã 10% äœãç¹æ°ãåããããŒã¬ã¬ããã¯ãã«ã³ãã 5 ç¹å€ãç¹æ°ãåããŸãããããŒã¬ã¬ããã¯ãã¹ãã§äœç¹ãåããŸãããïŒ
|
ãã«ã³ã®ç¹æ°ãèšç®ããããã«ããŸãã¯å¹³åç¹ã®90ãã10%ãèšç®ããŸãã
10%㯠\( \frac{10}{100} \times 90 = 9 \) ã§ãã
ãããã£ãŠããã«ã³ã®ç¹æ°ã¯ \( 90 - 9 = 81 \) ã§ãã
次ã«ãããŒã¬ã¬ããã¯ãã«ã³ãã5ç¹å€ãã®ã§ãããŒã¬ã¬ããã®ç¹æ°ã¯ \( 81 + 5 = 86 \) ã§ãã
ãããã£ãŠãããŒã¬ã¬ããã®ç¹æ°ã¯ 86 ã§ãã
åç㯠####86
|
57 |
å
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¬åã§åèšã§äœåã®è»èŒªãèŠãŸãããïŒ
|
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- èªè»¢è»ã®è»èŒªã®æ° = å€§äººã®æ° à èªè»¢è»ã®è»èŒªã®æ°
= 6 à 2 = 12åã®è»èŒª
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- äžèŒªè»ã®è»èŒªã®æ° = åäŸã®æ° à äžèŒªè»ã®è»èŒªã®æ°
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= 12 + 45 = 57åã®è»èŒª
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- è¶è²ãããã³: 6 å
ããããéããããã³:
- ç·ã®ããã³: 14 å
- éãããã³: 6 å
次ã«ãçœãæç¹ã®ããããã³ã®æ°ãèšç®ããŸãã
1. éãããã³ã®ååã«çœãæç¹ããããŸã:
- éãããã³: 6 åã®åå = 6 ÷ 2 = 3 å
2. èµ€ãããã³ã® 2/3 ã«çœãæç¹ããããŸã:
- èµ€ãããã³: 12 åã® 2/3 = 12 à (2/3) = 8 å
3. è¶è²ãããã³ã«ã¯ãã¹ãŠã«çœãæç¹ããããŸã:
- è¶è²ãããã³: 6 å
次ã«ããããã®æ°ãåèšããŸãã
çœãæç¹ã®ããããã³ã®åèšã¯:
3 (éã) + 8 (èµ€ã) + 6 (è¶è²ã) = 17
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4 Ã 20 = 80 å
次ã«ãããã« 14 åãå ããŸãã
80 å + 14 å = 94 å
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20 å + 94 å = 114 å
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çãã¯æ¬¡ã®éãã§ãïŒ####114
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800 |
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|
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å幎ã®çåŸæ° = ä»å¹Žã®çåŸæ° / 1.2 = 960 / 1.2
960 ÷ 1.2 = 800
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åç㯠800 ã§ãã®ã§ã####800
|
55 |
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|
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åèšåŸç¹ = ãµããŒã®åŸç¹ + ã®ã£ãã®åŸç¹ + ãã§ã¢ã®åŸç¹
åèšåŸç¹ = 20 + 40 + 80 = 140 ç¹
察æŠçžæã®åŸç¹ã¯ 85 ç¹ã§ãã®ã§ã圌ãã察æŠçžæã«å¯ŸããŠç²åŸããç¹æ°ã®å·®ã¯ã
ç¹æ°ã®å·® = åèšåŸç¹ - 察æŠçžæã®åŸç¹
ç¹æ°ã®å·® = 140 - 85 = 55 ç¹
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åç: ####55
|
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|
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ããªã¢ã®ãã¶ã®ææ° = 2.5 à 80 = 200 æ
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åèš = ãã³ã®ãã¶ + ããªã¢ã®ãã¶ = 80 + 200 = 280 æ
ãããã£ãŠã圌ãã¯åèšã§ 280 æã®ãã¶ãé£ã¹ãŸãã
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|
438 |
ã·ãããŒã¯æææ¥ã« 20 åãç«ææ¥ã« 36 åãæ°Žææ¥ã« 40 åãæšææ¥ã« 50 åã®ãžã£ã³ãã³ã°ãžã£ãã¯ãè¡ããŸããããã«ãã¯ã¯ã·ãããŒã® 3 åã®ãžã£ã³ãã³ã°ãžã£ãã¯ãè¡ããŸããããã«ãã¯ã¯åèšã§ããã€ã®ãžã£ã³ãã³ã°ãžã£ãã¯ãè¡ããŸãããïŒ
|
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- ç«ææ¥ïŒ36 å
- æ°Žææ¥ïŒ40 å
- æšææ¥ïŒ50 å
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20 + 36 + 40 + 50 = 146
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146 Ã 3 = 438
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èŠãªç·é¡ã¯ïŒ
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5 \text{人} \times 3 \text{ãã«} = 15 \text{ãã«}
\]
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- ããã±ã«: 85æ à $0.05 = $4.25
- ãã€ã : 35æ à $0.10 = $3.50
ãããã®éé¡ãåèšããŸãïŒ
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\]
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\]
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\[
\frac{1}{5} x
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\[
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\[
\frac{4}{5} x = 300
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\[
x = 300 \times \frac{5}{4} = 375
\]
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\]
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\[
T = 375 \times \frac{8}{3} = 375 \times \frac{8}{3} = 1000
\]
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åç: 1000 ####
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|
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\[
S = 2N + 100
\]
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\[
1000 = 2N + 100
\]
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\[
1000 - 100 = 2N
\]
ãããè§£ããšã
\[
900 = 2N
\]
次ã«ã䞡蟺ã2ã§å²ããŸãã
\[
N = \frac{900}{2} = 450
\]
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ãžã§ãã¡ãŒãœã³ã¯æäŒã«è¡ãããã«éЬè»ãéããŸãããæäŒãŸã§ã®è·é¢ã¯ 20 ãã€ã«ã§ããéŠ¬ã¯æé 10 ãã€ã«ã§èµ°ããŸããæéãããã®æé㯠30 ãã«ã§ãããã«ãã©ãããã£ãŒãšã㊠20 ãã«ãããããŸãããžã§ãã¡ãŒãœã³ã¯éЬè»ã«å¯ŸããŠåèšã§ãããæ¯æããŸãããïŒ
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æèŠæé = è·é¢ ÷ é床 = 20ãã€ã« ÷ 10ãã€ã«/æ = 2æé
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æéãããã®æéïŒ30ãã«ïŒ à æèŠæéïŒ2æéïŒ = 30ãã« Ã 2 = 60ãã«
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åèšè²»çš = æéãããã®æéã®åèš + ãã©ãããã£ãŒ = 60ãã« + 20ãã« = 80ãã«
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åç: ####80
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48 |
ãµã ã®ã³ã¬ã¯ã·ã§ã³ã«ã¯ãéããã³ããã10æ¬å€ãé»ããã³ããããéããã³ã¯éçã®2åã§ãããŸããéçã¯8æ¬ãããèµ€ããã³ã¯éçãã2æ¬å°ãªãã§ãããµã ã®ã³ã¬ã¯ã·ã§ã³ã«ã¯ãã³ã¯åèšã§äœæ¬ãããŸããïŒ
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ãµã ã®ã³ã¬ã¯ã·ã§ã³ã«å«ãŸããåã¢ã€ãã ã®æ°ãæŽçããŸãã
- éçã®æ¬æ° = 8æ¬
- èµ€ããã³ã®æ¬æ° = éçã®æ¬æ° - 2æ¬ = 8 - 2 = 6æ¬
éããã³ã®æ¬æ°ãæ±ããŸãïŒ
- éããã³ã®æ¬æ° = éçã®æ¬æ° à 2 = 8 à 2 = 16æ¬
é»ããã³ã®æ¬æ°ã¯ãéããã³ããã10æ¬å€ãã®ã§ïŒ
- é»ããã³ã®æ¬æ° = éããã³ã®æ¬æ° + 10æ¬ = 16 + 10 = 26æ¬
ãµã ã®ã³ã¬ã¯ã·ã§ã³ã«å«ãŸãããã³ã®ç·æ°ãæ±ããŸãïŒ
- åèš = é»ããã³ + éããã³ + èµ€ããã³ = 26 + 16 + 6 = 48æ¬
ãããã£ãŠããµã ã®ã³ã¬ã¯ã·ã§ã³ã«ã¯ãã³ã¯åèšã§48æ¬ãããŸãã
åçã¯ã####48ãã«ãªããŸãã
|
357 |
ãžã§ã»ãã¯åçåŸã« 23 æã®ã«ãŒããæž¡ãã15 人ã®çåŸã«æž¡ããåŸã§ 12 æã®ã«ãŒããæ®ã£ãŠããŸããããžã§ã»ãã¯æåã«äœæã®ã«ãŒããæã£ãŠããŸãããïŒ
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ãŸãã15人ã®çåŸã«23æãã€ã«ãŒããæž¡ããã®ã§ãæž¡ããã«ãŒãã®ç·ææ°ã¯æ¬¡ã®ããã«èšç®ããŸãã
æž¡ããã«ãŒãã®ææ° = 15人 à 23æ = 345æ
次ã«ããžã§ã»ãã®æå
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ãããã£ãŠããžã§ã»ããæåã«æã£ãŠããã«ãŒãã®ç·ææ°ã¯ãæž¡ããã«ãŒãã®ç·ææ°ã«æ®ã£ãŠããææ°ãå ãããã®ã§ãã
æåã«æã£ãŠããã«ãŒãã®ææ° = æž¡ããã«ãŒãã®ææ° + æ®ã£ãŠããææ°
= 345æ + 12æ
= 357æ
ãããã£ãŠããžã§ã»ãã¯æåã«357æã®ã«ãŒããæã£ãŠããŸããã
#### 357
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60é ÷ 2é/å°ç = 30å
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åç: ####30
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10 |
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50 ÷ 5 = 10
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åç: 10 ####
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èŠããããŸãã
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åç©åã«ã¯çŸåš 5 çš®é¡ã®åç©ãããŸããããããã®åç©çš®ãèŠãã®ã«çŽ 6 åããããŸããåç©åã 4 çš®é¡ã®æ°ããåç©çš®ãå°å
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5 çš®é¡ Ã 6 å = 30 å
æ°ããå°å
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4 çš®é¡ Ã 6 å = 24 å
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30 å + 24 å = 54 å
ãã£ãŠããã¹ãŠã®åç©çš®ãèŠãã®ã«ãããæé㯠54 åã§ãåçãšãªãæ°åã¯ã####ãã®åŸã«èšããŸãã
#### 54
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13 |
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ã¢ã°ãã¹ããžã§ãŒã³ã®å¹Žéœ¢ã® 2 åã«ãªãã®ã¯ãäœå¹ŽåŸããèããŸãã
x 幎åŸã®ã¢ã°ãã¹ã®å¹Žéœ¢ã¯ 25 + x ã«ãªããŸãã
x 幎åŸã®ãžã§ãŒã³ã®å¹Žéœ¢ã¯ 6 + x ã«ãªããŸãã
ã¢ã°ãã¹ã®å¹Žéœ¢ããžã§ãŒã³ã®å¹Žéœ¢ã® 2 åã«ãªããšãã®åŒã¯æ¬¡ã®ããã«ãªããŸãã
25 + x = 2 * (6 + x)
ãã®åŒãè§£ããŠã¿ãŸãããã
25 + x = 12 + 2x
25 - 12 = 2x - x
13 = x
åŸã£ãŠãã¢ã°ãã¹ããžã§ãŒã³ã®å¹Žéœ¢ã® 2 åã«ãªãã®ã¯ 13 幎åŸã§ãã
æçµçãªçã㯠####13ã§ãã
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600 |
ã¢ã¡ãªã«ããã¡ã¯æå€§ã§ç©ºäžã«æã¡äžã㊠5 ãã³ãã®éããéã¶ããšãã§ãããšãŒãããããã¡ã¯ã¢ã¡ãªã«ããã¡ã® 2 åã®éããéã¶ããšãã§ããŸãããšãŒãããããã¡ã® 2 åã®æ°ã®ã¢ã¡ãªã«ããã¡ãå«ã 90 矜ã®ããã¡ã®çŸ€ããããå Žåããã®çŸ€ããæå€§ã§éã¹ãåèšééã¯ããã€ã§ããïŒ
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5 ãã³ã à 2 = 10 ãã³ã
次ã«ã矀ãã®äžã®ããã¡ã®å²åãèããŸãããšãŒãããããã¡ã®æ°ã Eãã¢ã¡ãªã«ããã¡ã®æ°ã A ãšããŸããåé¡ã®æ¡ä»¶ã«åŸããšã次ã®ãããªé¢ä¿ãæãç«ã¡ãŸãïŒ
E = 2A
ãŸããå
šäœã§ 90 矜ã®ããã¡ãããã®ã§ã
A + E = 90
ãã® 2 ã€ã®åŒãçµã¿åããããšãE ã®åŒã A ã®åŒã«ä»£å
¥ããŠæ¬¡ã®ããã«ãªããŸãïŒ
A + 2A = 90
3A = 90
A = 90 / 3 = 30
ãã®çµæããã¢ã¡ãªã«ããã¡ã®æ°ã 30 矜ã§ããããšãåãããŸãããããã£ãŠããšãŒãããããã¡ã®æ° E ã¯ïŒ
E = 2A = 2 Ã 30 = 60
次ã«ãããããã®ããã¡ãéã¹ãæå€§ã®éãã䜿ã£ãŠã矀ãå
šäœã§éã¹ãéããèšç®ããŸãã
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30矜 à 5ãã³ã = 150ãã³ã
ãšãŒãããããã¡ã®éã¹ãééã¯ïŒ
60矜 à 10ãã³ã = 600ãã³ã
ãããã£ãŠã矀ãå
šäœãæå€§ã§éã¹ãåèšééã¯ïŒ
150ãã³ã + 600ãã³ã = 750ãã³ã
æçµçã«çŸ€ããæå€§ã§éã¹ãåèšéé㯠750 ãã³ãã§ãã®ã§ãåçã¯ä»¥äžã®ããã«ãªããŸãã
#### 750
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次ã«ãèµ€ãéŽäžã®ãã¢ã®2åã®éãéŽäžãæã£ãŠãããããéãéŽäžã®ãã¢ã®æ°ã¯æ¬¡ã®ããã«ãªããŸãïŒ
éãéŽäžã®ã㢠= 2 à 赀ãéŽäžã®ã㢠= 2 à 3 = 6ãã¢
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éãéŽäžã®ã㢠- 3 = é»ãéŽäžã®ãã¢
6 - 3 = 3ãã¢ïŒé»ãéŽäžã®ãã¢ïŒ
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èµ€ãéŽäžã®ã㢠+ 1 = çœãéŽäžã®ãã¢
3 + 1 = 4ãã¢ïŒçœãéŽäžã®ãã¢ïŒ
次ã«ãåè²ã®éŽäžã®ãã¢æ°ããŸãšããŸãïŒ
- èµ€ãéŽäžã®ãã¢: 3ãã¢
- éãéŽäžã®ãã¢: 6ãã¢
- é»ãéŽäžã®ãã¢: 3ãã¢
- çœãéŽäžã®ãã¢: 4ãã¢
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3 + 6 + 3 + 4 = 16ãã¢
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ç·æ° = 16 Ã 2 = 32è¶³
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50 ãã« Ã 2 = 100 ãã«
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å²åŒé¡ = å®äŸ¡ à å²åŒç
= 100 ãã« Ã 0.40
= 40 ãã«
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= 60 ãã«
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åç㯠60 ####
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3æ Ã 20ãã« = 60ãã«
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ã·ã¢ã³ã®åå
¥ = 30æ Ã 0.50ãã« = 15ãã«
ããŒã¿ãŒã¯80æã®çœãåæãæã£ãŠããã1æã®çœãåæã¯20ã»ã³ãã§å£²ãããŠããŸãããããã£ãŠãããŒã¿ãŒã皌ãéé¡ã¯æ¬¡ã®ããã«èšç®ã§ããŸãïŒ
ããŒã¿ãŒã®åå
¥ = 80æ Ã 0.20ãã« = 16ãã«
次ã«ãäºäººã®åå
¥ã®å·®ãèšç®ããŸãïŒ
åå
¥ã®å·® = ããŒã¿ãŒã®åå
¥ - ã·ã¢ã³ã®åå
¥ = 16ãã« - 15ãã« = 1ãã«
ãããã£ãŠã圌ãã皌ãéé¡ã®å·®ã¯1ãã«ã§ããçãã¯æ¬¡ã®éãã§ãïŒ
#### 1
|
20 |
ã¢ã€ãªã¹ã¯ããªãŒèŸ²åãæã£ãŠããŸãã圌女ã®å
ãšåйãããªãŒãæãã§åžå Žã«å£²ãæäŒããããŠããŸããã¢ã€ãªã¹ã¯ 30 åã®ãã«ãŒããªãŒãæã¿ã効㯠20 åã®ã¯ã©ã³ããªãŒãæã¿ãå
㯠10 åã®ã©ãºããªãŒãæã¿ãŸããã圌ããæãã ããªãŒã® 1/3 ãè
ã£ãŠããŠãæ®ãã®æ°é®®ãªããªãŒã®ååãä¿ç®¡ããå¿
èŠãããå Žåã圌ãã¯ããã€ã®ããªãŒã売ãããšãã§ããŸããïŒ
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ãŸããæãŸããããªãŒã®åèšæ°ãèšç®ããŸãã
- ã¢ã€ãªã¹ã®ãã«ãŒããªãŒ: 30å
- 効ã®ã¯ã©ã³ããªãŒ: 20å
- å
ã®ã©ãºããªãŒ: 10å
åèš:
30 + 20 + 10 = 60å
次ã«ã60åã®ããªãŒã®1/3ãè
ã£ãŠããã®ã§ãè
ã£ãŠããããªãŒã®æ°ãèšç®ããŸãã
è
ã£ãŠããããªãŒ:
60 Ã (1/3) = 20å
ãããã£ãŠãæ°é®®ãªããªãŒã®æ°ã¯æ¬¡ã®éãã§ãã
æ°é®®ãªããªãŒ:
60 - 20 = 40å
æ°é®®ãªããªãŒã®ååãä¿ç®¡ããå¿
èŠããããŸãã®ã§ãä¿ç®¡ããã¹ãæ°ãèšç®ããŸãã
ä¿ç®¡ããããªãŒ:
40 Ã (1/2) = 20å
æåŸã«ã売ãããšãã§ããããªãŒã®æ°ãèšç®ããŸãã
売ããããªãŒ:
æ°é®®ãªããªãŒ - ä¿ç®¡ããããªãŒ = 40 - 20 = 20å
ãããã£ãŠãã¢ã€ãªã¹ãšåœŒã®å
効ã売ãããšãã§ããããªãŒã®æ°ã¯20åã§ãã
åçã¯ã#### 20ãã§ãã
|
10 |
ã¹ã¿ã³ã㯠46 åã®ã¹ã€ã«ã販売ããŸããã17 人ã®é¡§å®¢ããããã 1 åã®ã¹ã€ã«ã賌å
¥ãã3 人ã®é¡§å®¢ããããã 3 åã®ã¹ã€ã«ã賌å
¥ããŸãããæ®ãã®é¡§å®¢ã¯ãããã 2 åã®ã¹ã€ã«ã賌å
¥ããŸããã2 åã®ã¹ã€ã«ã賌å
¥ãã顧客ã¯äœäººã§ããïŒ
|
ãŸãã販売ãããã¹ã€ã«ã®ç·æ°ãšé¡§å®¢ã®è³Œå
¥ããã¹ã€ã«ã®ç¶æ³ãæŽçããŸãã
- 17 人ã®é¡§å®¢ããããã 1 åã®ã¹ã€ã«ã賌å
¥ããã®ã§ãåèšã§ 17 åã®ã¹ã€ã«ã販売ãããŸããã
- 3 人ã®é¡§å®¢ããããã 3 åã®ã¹ã€ã«ã賌å
¥ããã®ã§ãåèšã§ 3 à 3 = 9 åã®ã¹ã€ã«ã販売ãããŸããã
ããããŸãšãããšã17 顧客㚠3 顧客ã§åèšã®ã¹ã€ã«è²©å£²æ°ã¯æ¬¡ã®ããã«ãªããŸãã
\[
17 + 9 = 26
\]
ç·è²©å£²æ°ã¯ 46 åãªã®ã§ãæ®ãã®ã¹ã€ã«æ°ã¯æ¬¡ã®ããã«èšç®ããŸãã
\[
46 - 26 = 20
\]
æ®ãã®é¡§å®¢ã¯ 2 åã®ã¹ã€ã«ã賌å
¥ãããšãããšãæ®ãã® 20 åã®ã¹ã€ã«ã賌å
¥ãã顧客ã®äººæ°ãæ±ããããã«ã¯ã次ã®åŒã䜿ããŸãã
ãã x 人ã 2 åã®ã¹ã€ã«ã賌å
¥ãããã以äžã®åŒãæãç«ã¡ãŸãã
\[
2x = 20
\]
ãããè§£ããšã
\[
x = \frac{20}{2} = 10
\]
ãããã£ãŠã2 åã®ã¹ã€ã«ã賌å
¥ãã顧客㯠10 人ã§ãã
åç: ####10
|
13 |
ãªã¿ã¯ 95 ããŒãžã® 5 ç« ãããªãæ¬ãèªãã§ããŸããåç« ã¯åã®ç« ãã 3 ããŒãžå€ãã§ããæåã®ç« ã¯äœããŒãžãããŸããïŒ
|
ãªã¿ã®æ¬ã¯5ç« ãããåèšã§95ããŒãžã§ããåç« ã¯åã®ç« ãã3ããŒãžå€ããšããããšã¯ãåç« ã®ããŒãžæ°ã次ã®ããã«è¡šãããšãã§ããŸãã
- 1ç« : x ããŒãž
- 2ç« : x + 3 ããŒãž
- 3ç« : x + 6 ããŒãž
- 4ç« : x + 9 ããŒãž
- 5ç« : x + 12 ããŒãž
ãããã®ããŒãžæ°ãåèšãããšã次ã®ããã«ãªããŸãã
\[
x + (x + 3) + (x + 6) + (x + 9) + (x + 12) = 95
\]
ãããæŽçãããšã
\[
5x + (3 + 6 + 9 + 12) = 95
\]
\[
5x + 30 = 95
\]
ãããè§£ãããã«ã30ãåŒããŸãã
\[
5x = 95 - 30
\]
\[
5x = 65
\]
䞡蟺ã5ã§å²ããŸãã
\[
x = \frac{65}{5} = 13
\]
ãããã£ãŠãæåã®ç« ã®ããŒãžæ°ã¯13ããŒãžã§ããåçã¯ä»¥äžã®éãã§ãã
#### 13
|
28 |
ãã£ãã¯ãããã¯ãµãŒã§ãã圌女ã¯ãã£ãªã¢ã®æåã® 10 æŠãåã¡ãŸããããã®åŸãããã« 5 æŠãåã¡ãåããŠã®æåãçµéšããŸãããã®åŸãå婿°ãåã«ããŠããåã³æåããŸãããã®åŸã圌女ã¯åŒéããŸãã圌女ã®ãã£ãªã¢ã®çµããã«ãããå婿°ãšæåæ°ã®å·®ã¯ããã€ã§ããïŒ
|
ãã£ãã®è©Šåã®çµæãæŽçãããšä»¥äžã®éãã§ãïŒ
1. åãã® 10 æŠåå© â å婿°: 10
2. 次㮠5 æŠåå© â å婿°: 10 + 5 = 15
3. åããŠã®æå â æåæ°: 1
4. å婿°ãåã«ãã â å婿°: 15 à 2 = 30
5. åã³æå â æåæ°: 1 + 1 = 2
ãã£ãªã¢ã®çµããã«ãããå婿°ã¯ 30ãæåæ°ã¯ 2 ã§ããå婿°ãšæåæ°ã®å·®ãèšç®ããŸãïŒ
30 - 2 = 28
ãããã£ãŠãå婿°ãšæåæ°ã®å·®ã¯ 28 ã§ãã
åç㯠####28 ã§ãã
|
9 |
ã·ã§ã³ãã¯ãèªåã® 2 人ã®åäŸãšãã® 10 人ã®åéã®ããã«ã€ãŒã¹ã¿ãŒã®ãšãã°ãã³ããéå¬ããŠããŸãããŸããèªåãå«ã 7 人ã®å€§äººã«ãååãªæ°ã®åµãçšæããŠããŸãã15 åã®ã€ãŒã¹ã¿ãŒã®ãšãã°ãã¹ã±ãããå
šå¡ã§å
±æãããããããã« 12 åã®ã€ãŒã¹ã¿ãŒã®åµãå
¥ã£ãŠããå Žåãå
šãŠã®åµãå¹³çã«åé
ãããšããäžäººåœããäœåã®åµãããããŸããïŒ
|
ãŸããåå è
ã®åèšäººæ°ãèšç®ããŸãã
- ã·ã§ã³ãèªèº«: 1人
- åäŸ: 2人
- åé: 10人
- 倧人: 7人
åèšäººæ°ã¯:
1 + 2 + 10 + 7 = 20人
次ã«ãåµã®ç·æ°ãèšç®ããŸãã
ã€ãŒã¹ã¿ãŒã®ãšãã°ãã¹ã±ããã¯15åãããããããã«12åã®åµãå
¥ã£ãŠããŸãã®ã§ãåµã®ç·æ°ã¯:
15 Ã 12 = 180å
ãã®180åã®åµã20人ã§å¹³çã«åé
ããŸãã®ã§ãäžäººåœããã®åµã®æ°ã¯:
180 ÷ 20 = 9å
ãããã£ãŠãäžäººåœããã®åµã®æ°ã¯9åã§ãã
æçµçãªåçã¯ã####9ãã§ãã
|
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