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Discussion :: Time and Work

  1. Ravi can do a piece of work in 30 days while Prakash can do it in 40 days. In how many days will they finish it together?
    2. A.
    17 1/7 days
    B.
    27 1/7 days
    C.
    23 2/7 days
    D.
    16 4/11 days

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    Workspace

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    Answer : Option A

    Explanation :

    1/30 + 1/40 = 7/120

    120/7 = 17 1/7 days

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