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Discussion :: Time and Work

  1. A can do a piece of work in 6 days working 8 hours a day. B can do the same work in 4 days working 6 hours a day. If they work together 8 hours a day, in how many days they will do this work?
    2. A.
    3 days
    B.
    3.5 days
    C.
    2 days
    D.
    2.5 days

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    Workspace

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    Answer : Option C

    Explanation :

    A can complete the work in, 6 x 8 = 48 hour

    B can complete the same work in = 4 x 6 = 24 hours

    A's one hour work =Apti Time and Work

    B's one hour work =Apti Time and Work

    (A +B)'s one hour work = Apti Time and Work

    They will complete Apti Time and Work

    So, the entire work will be completed in 1 ∗ 144 = 144 hours
                                                                     9        9

    Both work 8 hours a day so the number of days required to complete the work = Apti Time and Work = 2 days

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