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    Question

    TYPE 12

    1500 metres long train crosses a man who is moving in

    the same direction with a certain speed in 30 seconds. If the same train can cross a pole in 20 seconds with the same speed, then find the speed of the man.
    A 16 m/sec Correct Answer Incorrect Answer
    B 25 m/sec Correct Answer Incorrect Answer
    C 22 m/sec Correct Answer Incorrect Answer
    D 18 m/sec Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let the speed of the man be ‘x’ m/sec. Speed of train = 1500/20 = 75 m/sec Relative speed of the train = (75 – x) m/sec According to the question, => (75 – x) = 1500/30 => x = 75 – 50 => x = 25 Therefore the speed of the man = 25 m/sec

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