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Railways RRB (Assistant Loco Pilot) Solved Paper-2013

  • question_answer
    A man, a woman and a boy can together complete a piece of work in 3 days. If a man alone can do it in 6 days and a boy alone in 18 days, how long will a woman alone take to complete the work?

    A)  9 days            

    B)  21 days

    C)  24 days                       

    D)  27 days

    Correct Answer: A

    Solution :

     Work of (1 ma n + 1 women + 1 boy) for 1 day\[=\frac{1}{3}\] \[\therefore \] Work of 1 man for 1 day\[=\frac{1}{6}\] and work of 1 boy for 1 day\[=\frac{1}{18}\] \[\therefore \]Work of 1 women for 1 day\[=\frac{1}{3}-\frac{1}{6}-\frac{1}{18}=\frac{1}{9}\] Hence, woman alone will complete the work in 9 days.


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