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    Question

    A train can cross a pole and a platform of 300 meters

    long in 8 sec and 20 sec respectively. Find the time taken by the train to cross another platform having length 250 meters.
    A 18 sec Correct Answer Incorrect Answer
    B 19 sec Correct Answer Incorrect Answer
    C 20 sec Correct Answer Incorrect Answer
    D 21 sec Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let the length of the train be ‘x’ meters. According to question, => x/8 = (x + 300)/20 => 20x = 8x + 2400 => x = 200  The speed of the train = 200/8 = 25 m/s Required time taken by train to cross another platform = (200 + 250)/25 = 18 sec 

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