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Discussion :: Time and Work

  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?
    2. A.
    1
    B.
    4
    C.
    19
    D.
    41

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    Workspace

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    Answer : Option D

    Explanation :

    (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

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