Question

    Two pipes X and Y can fill a tank in 12 minutes and 18

    minutes, respectively. If both the pipes are opened simultaneously, how long will it take to fill the tank?
    A 15 minutes Correct Answer Incorrect Answer
    B 5/36 minutes Correct Answer Incorrect Answer
    C 14 minutes Correct Answer Incorrect Answer
    D 7(1/5) minutes Correct Answer Incorrect Answer

    Solution

    The correct answer is D

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