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    Question

    Ratio of the work done by P, Q and R in one day is 6:5:7

    respectively. They all together can complete the work in 36 days. Q and R worked on it for 18 days. In how many days P will complete the remaining work.
    A 72 days Correct Answer Incorrect Answer
    B 65 days Correct Answer Incorrect Answer
    C 88 days Correct Answer Incorrect Answer
    D 78 days Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let total amount work be = 18 x 36 = 648 units Amount of work done by Q and R in 18 days = 18 x 12 = 216 units Amount of work left = 648 – 216 = 432 Required time = 432/6 = 72 days

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