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Discussion :: Time and Work

  1. A does a work in 10 days and B does the same work in 15 days. In how many days they together will do the same work?
    2. A.
    5 days
    B.
    6 days
    C.
    8 days
    D.
    9 days

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    Workspace

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    Answer : Option B

    Explanation :

    A's 1 day work = 1/10; B's 1 day work = 1/15

    (A + B)'s 1 day work = (1/10 + 1/15) = 1/6

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