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Discussion :: Time and Work

  1. Thirty men can do a work in 24 days. In how many days can 20 men can do the work, given that the time spent per day is increased by one-third of the previous time?
    2. A.
    30
    B.
    28
    C.
    24
    D.
    33
    E.
    None of these

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    Workspace

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    Answer : Option E

    Explanation :

    Let the number of hours working per day initially be x. we have M1 D1 H1= M2 D2 H2

    30 * 24 * x = 20 * d2 * (4x)/3  => d2 = (30 * 24 * 3)/(24 * 4) = 27 days.

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