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    Question

    A train crosses a pole and a platform of length 624

    metres in 13 seconds and 29 seconds, respectively. Find the length of train.
    A 467 metres Correct Answer Incorrect Answer
    B 487 metres Correct Answer Incorrect Answer
    C 507 metres Correct Answer Incorrect Answer
    D 527 metres Correct Answer Incorrect Answer

    Solution

    Let the speed of train be 'v' m/s.
    Length of train = '13v' metres

    So, (13v + 624) ÷ 29 = 'v'

    Or, 13v + 624 = 29v
    Or, 16v = 624
    So, 'v' = 39

    Therefore, length of the train = 13 × 39 = 507 metres

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