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Discussion :: Time and Work

  1. If 5 workers can paint a house in 9 days, in how many days 3 workers can complete the same task?
    2. A.
    13 days
    B.
    14 days
    C.
    15 days
    D.
    16 days

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    Answer : Option C

    Explanation :

    Using formula: M1D1W2 =M2D2W1

    We have = 5∗9∗W2 = 3∗D2∗W1

    W2 = W1 as the task is the same in both the cases, so the amount of work to be done would be the same.

    Therefore, we have 5 ∗ 9 = 3 ∗ D2

    45 = 3∗ D2

    D2 =   45   =   15days
               3

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