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

    Question

    Suraj is one third as good as workman as Pankaj and

    together they finish a piece of work in 36 days. The number of days taken by Suraj alone to finish the work is
    A 190 days Correct Answer Incorrect Answer
    B 144 days Correct Answer Incorrect Answer
    C 249 days Correct Answer Incorrect Answer
    D 48 days Correct Answer Incorrect Answer

    Solution

    Ratio of efficiency of Pankaj & Suraj = 3:1 & they do a job in 36 days so let total work = (3+1)`xx` 36 = 144 units Hence Suraj alone will finish this job in = 144/1 = 144 days

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