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    Question

    P’s 3 days work is equal to Q’s 5 days work. If P

    and Q together can complete the work in 30 days then how much time Q will take to complete 75% of the work?
    A 60 days Correct Answer Incorrect Answer
    B 48 days Correct Answer Incorrect Answer
    C 36 days Correct Answer Incorrect Answer
    D 54 days Correct Answer Incorrect Answer

    Solution

    Ratio of efficiency of P and Q = 5:3 Let the efficiency of P and Q be 5x and 3x units per day respectively. Total work = 8x × 30 = 240x units Required time = (0.75 × 240x)/3x = 60 days

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