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Discussion :: Time and Work

  1. A and B can do a work in 12 days and 36 days respectively. If they work on alternate days beginning with B, in how many days will the work be completed?
    2. A.
    20 2/3
    B.
    9
    C.
    24
    D.
    26 5/9
    E.
    None of these

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    Workspace

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    Answer : Option E

    Explanation :

    The work done in the first two days = 1/12 + 1/36 = 1/9

    so, 9 such two days are required to finish the work.

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