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    Question

    P, Q and R can do a work in 15, 20 and 30 days

    respectively. The contractor decides to put any two of them on the job so as to finish the work earlier. Which of these choices is the best?
    A Either PQ or QR Correct Answer Incorrect Answer
    B QR Correct Answer Incorrect Answer
    C RP Correct Answer Incorrect Answer
    D PQ Correct Answer Incorrect Answer

    Solution

    The correct answer is D

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