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    Question

    A man running at the speed of 6 kmph was over taken by

    the train moving with the speed of 78 kmph in 20 seconds. Find the length of train.
    A 600 Correct Answer Incorrect Answer
    B 560 Correct Answer Incorrect Answer
    C 520 Correct Answer Incorrect Answer
    D 400 Correct Answer Incorrect Answer

    Solution

    According to the question, Let length of train be ‘x’ m. => (Speed of train – Speed of man) = Length of train/Time => (78 - 6)× (5/18) = x/20 => 20 = x/20 => x = 400 Length of train is 400 meter.

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