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Discussion :: Time and Work

  1. A and B can do a work in 5 days and 10 days respectively. A starts the work and B joins him after 2 days. In how many days can they complete the remaining work?
    2. A.
    1 day
    B.
    2 days
    C.
    3 days
    D.
    4 days

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    Workspace

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    Answer : Option B

    Explanation :

    Work done by A in 2 days = 2/5
    Remaining work = 3/5
    Work done by both A and B in one day = 1/5 + 1/10 = 3/10
    Remaining work = 3/5 * 10/3 = 2 days.

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