New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    Ten men begin to do work. But after some days, four of

    them left the job. As a result, the job that could have been completed in 40 days is completed in 50 days. How many days after the commencement of the work did the four men leave?
    A 49days Correct Answer Incorrect Answer
    B 25days Correct Answer Incorrect Answer
    C 45days Correct Answer Incorrect Answer
    D 52days Correct Answer Incorrect Answer

    Solution

    Let 4 men leave after x days.   A.T.Q. - 10x + 6(50 – x) = 40 × 10   10x + 300 – 6x = 400 4x=100   x = 25 days

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