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    Question

    Length of a train, whose speed is 90 km/h, is 600

    metres. Find the time taken (in seconds) by train to cross a bridge of length 300 metres.
    A 25 seconds Correct Answer Incorrect Answer
    B 30 seconds Correct Answer Incorrect Answer
    C 36 seconds Correct Answer Incorrect Answer
    D 40 seconds Correct Answer Incorrect Answer

    Solution

    Speed of train = 90 km/h = 90 × (5/18) = 25 m/s
    Required time = (600 + 300) ÷ 25 = 900 ÷ 25 = 36 seconds

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