1.

A man, a woman and a boy can complete a job in 3, 4 and 12 days respectively. How many boys must assist 1 man and 1 woman to complete the job in 1/4 of a day?

Answer»

41



(1 man + 1 woman)'s 1 day work = (1/3 + 1/4) = 7/12 Work done by 1 man and 1 woman in 1/4 day = (7/12 * 1/4) = 7/48 

Remaining work = (1 - 7/48) = 41/48

Work done by 1 boy in 1/4 day = ( 1/12 * 1/4) = 1/48

Number of BOYS REQUIRED = 41/48 * 41 = 41.



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