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    Question

    Ratio of the work done by P, Q and R in one day is 5:3:7

    respectively. They all together can complete the work in 35 days. Q and R worked on it for 20 days. In how many days P will complete the remaining work.
    A 70 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 = 35 x 15 = 525 units Amount of work done by Q and R in 20 days = 20 x 10 = 200 units Amount of work left = 525 – 200 = 325 Required time = 325/5 = 65 days

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