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- Chain Rule
16.
If 12 carpenters, working 6 hours a day, can make 460 chairs in 24 days, how many chairs will 18 carpenters make in 36 days, each working 8 hours a day?
- A.1260
- C.920
- B.1320
- D.1380
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
| Let the required number of chairs be x. Then, | |||||||||||||||
| More Carpenters, More Chairs (Direct Proportion) | |||||||||||||||
| More hours per day, More chairs (Direct Proportion) | |||||||||||||||
More days, More chairs (Direct Proportion) |
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17.
In a dairy farm, 40 cows eat 40 bags of husk in 40 days. In how many days one cow will eat one bag of husk?
- A.1
- C.40
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B.
1 2 3 - D.80
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| Let the required number of days be Rs. x. | |||||||||
| Less cows, More days (Indirect Proportion) | |||||||||
| Less cows, More days (Direct Proportion) | |||||||||
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18.
If 7 spiders make 7 webs in 7 days, then 1 spider will make 1 web in how many days?
- A.1
- C.7
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B.
7 2 - D.49
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| Let the required number of days be x. Then, | |||||||||||||
| Less spiders, More days (Indirect Proportion) | |||||||||||||
| Less webs, Less days (Direct Proportion) | |||||||||||||
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19.
In a camp, there is a meal for 120 men or 200 children. If 150 children have taken the meal, how many men will be catered to with the remaining meal?
- A.20
- C.40
- B.30
- D.50
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| There is a meal for 200 children. 150 children have taken the meal. | ||||||||
| Remaining meal to be catered to 50 children. | ||||||||
Now, 200 children = 120 men |
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20.
A flagstraff 17.5 m high casts a shadow of length 40.25 m. The height of the building, which casts a shadow of length 28.75 m under similar conditions will be:
- A.10 m
- C.17.5 m
- B.12.5 m
- D.21.25 m
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| Let the height of the building be x metres. | |||||||||
| Less lengthy shadow, Less is the height (Direct Proportion) | |||||||||
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