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    Question

    P, Q and R can finish a work in 5 days, 10 days, and 15

    days, respectively, working alone. P and Q works on first day, P and R works on second day and P and Q works on third day and son on till the work is completed. In how many days the work will be completed?
    A 13/2 Correct Answer Incorrect Answer
    B 9/2 Correct Answer Incorrect Answer
    C 7/2 Correct Answer Incorrect Answer
    D 5/2 Correct Answer Incorrect Answer

    Solution

    The correct answer is C

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