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Discussion :: Time and Work

  1. A can complete a job in 9 days. B in 10 days and C in 15 days. B and C start the work and are forced to leave after 2 days. The time taken to complete the remaining work is?
    2. A.
    6 days
    B.
    9 days
    C.
    10 days
    D.
    13 days

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    Workspace

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    Answer : Option A

    Explanation :

    (B + C)'s 2 day's work = 2 (1/10 + 1/15) = 1/3 Remaining work = (1 “ 1/3) = 2/3 1/9 work is done by A in 1 day Therefore 2/3 work is done by A in (9 x 2/3) = 6 days

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