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    Question

    An inlet pipe can fill an empty tank in 3.6 hours, while

    an outlet pipe can drain a completely-filled tank in 6.3 hours. If both the pipes are opened simultaneously when the tank is empty, in how many hours will the tank get completely filled?
    A 9.0 Correct Answer Incorrect Answer
    B 8.4 Correct Answer Incorrect Answer
    C 8.1 Correct Answer Incorrect Answer
    D 8.7 Correct Answer Incorrect Answer

    Solution

    The correct answer is B

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