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Discussion :: Time and Work

  1. A can do a piece of work in 10 days. B is 50% more efficient than A. In how many days B alone can do the same job?
    2. A.
    6.2 days
    B.
    6.6 days
    C.
    7 days
    D.
    7.2 days

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    Answer : Option B

    Explanation :

    B is 50%Apti Time and work 68more efficient than A so he will take less time to do a piece of work.

    Therefore, the ratio of the time taken by A and B =Apti Time and work 69

    Let B takes X days to do the job.

    Apti Time and work 70

    3X =20

    X = 6.6 days

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