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    Question

    Length of a train, whose speed is 45 km/h, is 225

    metres. Find the time taken (in seconds) by train to cross a bridge of length 375 metres.
    A 48 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 = 45 km/h = 45 × (5/18) = 12.5 m/s
    Required time = (225 + 375) ÷ 12.5 = 600 ÷ 12.5 = 48 seconds

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