Question

    A train running with a speed of 45 km/hr can cross a

    pole in 10 seconds and a platform in 20 seconds. Find the length of the platform.
    A 125 metres Correct Answer Incorrect Answer
    B 105 metres Correct Answer Incorrect Answer
    C 127 metres Correct Answer Incorrect Answer
    D 115 metres Correct Answer Incorrect Answer

    Solution

    Speed of the train = 45 × (5/18) = 12.5 m/sec Length of the train = 12.5 × 10 = 125 metres Let the length of the platform be ‘x’ metres Therefore, 125 + x = 12.5 × 20 Or, x = 250 – 125 = 125 metres

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