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    Question

    P and Q individually can complete the work in 26 days

    and 39 days respectively. If the time taken by R alone to complete the work is 1.25 times the time taken by P and Q together to complete the work, find the time taken by R to complete the work while working alone.
    A 16.5 days Correct Answer Incorrect Answer
    B 19.5 days Correct Answer Incorrect Answer
    C 27 days Correct Answer Incorrect Answer
    D 28.5 days Correct Answer Incorrect Answer

    Solution

    Time taken by P and Q together to complete the work = (26 × 39)/ (26 + 39) = 15.6 days Time taken by R alone to complete the work = 1.25 × 15.6 = 19.5 days

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