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Discussion :: Time and Work

  1. A can do a piece of work in 21 days and B in 28 days. Together they started the work and B left after 4 days. In how many days can A alone do the remaining work?
    2. A.
    12
    B.
    10
    C.
    16
    D.
    14
    E.
    None of these

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    Workspace

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    Answer : Option D

    Explanation :

    Let A worked for x days.

     x/21 + 4/28 = 1 => x/21 = 6/7  => x = 18

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