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    Question

    A train running at 90 km/hr crosses a vertical pole in 5

    seconds and a platform in 20 seconds. Determine the length of the platform.
    A 312 m Correct Answer Incorrect Answer
    B 328 m Correct Answer Incorrect Answer
    C 375 m Correct Answer Incorrect Answer
    D 249 m Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, Speed of the train = 90 × (5/18) = 25 m/s Length of the train = 25×5 = 125 metres Let the length of the platform be x metres. According to the question: (125+x)/25 = 20 125 + x = 500 x = 375 metres

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