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    Question

    Two pipes X and Y can fill a cistern in 21 hours and 24

    hours, respectively. The pipes are opened simultaneously, and it is found that due to a leakage in the bottom, it takes 48 minutes more to fill the cistern. When the cistern is full, in how much time will the leak empty it if no pipe is open during that time?
    A 168 hours Correct Answer Incorrect Answer
    B 120 hours Correct Answer Incorrect Answer
    C 130 hours Correct Answer Incorrect Answer
    D 144 hours Correct Answer Incorrect Answer

    Solution

    The correct answer is A

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