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    Question

    A 140 m long train crosses another 260 m long train

    running in the opposite direction in 15 seconds. If the shorter train crosses a pole in 14 seconds, what is the speed of longer train?
    A 108 km/hr Correct Answer Incorrect Answer
    B 90 km/hr Correct Answer Incorrect Answer
    C 63 km/hr Correct Answer Incorrect Answer
    D 60 km/hr Correct Answer Incorrect Answer
    E 81 km/hr Correct Answer Incorrect Answer

    Solution

    Speed of the shorter train = 140/14 = 10 m/sec Let the speed of the longer train be x km/hr According to the question, ⇒ (10 + x) = (140 + 260)/15 ⇒ 10 + x = 400/15 ⇒ x = 400/15 – 10 = 250/15 ⇒ x = 50/3 x 18/5 = 60 km/hr

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