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Discussion :: Time and Work

  1. A, B and C can do a work in 6 days, 8 days and 12 days respectively. In how many days can all three of them working together, complete the work?
    2. A.
    2 2/3 days
    B.
    4 2/3 days
    C.
    1 2/3 days
    D.
    2 1/3 days

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    Workspace

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    Answer : Option A

    Explanation :

    Work done by all three of them in one day = 1/6 + 1/8 + 1/12 = 3/8.
    The number of days required = 8/3 = 2 2/3 days.

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