New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    A train crosses a pole and a platform of length 576

    metres in 12 seconds and 30 seconds, respectively. Find the length of train.
    A 344 metres Correct Answer Incorrect Answer
    B 364 metres Correct Answer Incorrect Answer
    C 384 metres Correct Answer Incorrect Answer
    D 404 metres Correct Answer Incorrect Answer

    Solution

    Let the speed of train be 'v' m/s.
    Length of train = '12v' metres

    So, (12v + 576) ÷ 30 = 'v'

    Or, 12v + 576 = 30v
    Or, 18v = 576
    So, 'v' = 32

    Therefore, length of the train = 12 × 32 = 384 metres

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