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Discussion :: Time and Work

  1. A take twice as much time as B or thrice as much time to finish a piece of work. Working together, they can finish the work in 2 days. B can do the work alone in?
    2. A.
    4 hours
    B.
    6 hours
    C.
    8 hours
    D.
    12 hours

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    Workspace

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    Answer : Option B

    Explanation :

    Suppose A, B and C take x, x/2 and x/3 respectively to finish the work. 

    Then, (1/x + 2/x + 3/x) = 1/2 

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