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Chain Rule

9 Articles

A certain number of answer sheets can be checked in 12 days working 5 hours each day by 9 examiners. For how many hours a day should 4 examiners work to check twice the number of answer sheets in 30 days ?

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Answer : D. 9 hours

If 4 men reap 40 acres in 30 days, how many acres will 18 men reap in 12 days ?

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Answer : D. 72 Acres

In a dairy farm, 20 cows eat 20 bags in 20 days. In how many days one cow will eat one bag of husk ?

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Answer : C. 20 days

If 30 men can build a wall 56 meters long in 5 days, what length of a similar wall can be built by 40 men in 3 days ?

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Answer : B. 44.8 m

In 36.5 weeks, Miguel raised $2372.50 for cancer research. How much money will he raise 20 weeks ?

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Answer : B. $1300

75 basketballs cost $1,143.75. Find the cost of 26 basketballs ?

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Answer : A. $ 396.50

A garrison of 500 men had provisions for 24 days. However, a reinforcement ?

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Answer : A. 15 days

If 7 spiders make 7 webs in 7 days, then 1 spider will make 1 web ?

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Answer : C. 7

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 ?

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Answer : C. 40

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