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Discussion :: Time and Work

  1. A can do a piece of work in 30 days. He works at it for 5 days and then B finishes it in 20 days. In what time can A and B together it?
    2. A.
    16 2/3 days
    B.
    13 1/3 days
    C.
    17 1/3 days
    D.
    16 1/2 days

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    Workspace

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    Answer : Option B

    Explanation :

    5/30 + 20/x = 1

    x = 24

    1/30 + 1/24 = 3/40

    40/3 = 13 1/3 days

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