59. 10 men, working 6 hours a day can complete a work in 18 days. How many hours a day must 15 men work to complete the same work in 12 days?
[A]6
[C] 12
[B]10
[D] 15
Answer : A
Explanation :
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| Let the required number of hours per day be x. | |||||||||
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| More men, Less hours per day (Indirect Proportion) | |||||||||
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| Less days, more hours per day (Indirect Proportion) | |||||||||
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