Question

    TYPE 1

    Train A running at a speed of 42 km/hr crosses train B

    in 36 seconds. Find the speed of train B (in km/hr), if the sum of the length of train A and B is 550 meters and both trains running in the opposite direction.
    A 19 km/hr Correct Answer Incorrect Answer
    B 13 km/hr Correct Answer Incorrect Answer
    C 20 km/hr Correct Answer Incorrect Answer
    D 14 km/hr Correct Answer Incorrect Answer
    E 24 km/hr Correct Answer Incorrect Answer

    Solution

    Let speed of train B be ‘x’ km/hr. According to question, => 36(42 + x) × (5/18) = 550 => 1512 + 36x = 1980 => 36x = 468 => x = 13 km/hr

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