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    Question

    TYPE 46

    Train X running at a speed of 35 km/hr crosses train Y

    in 20 seconds. Find the speed of train Y (in km/hr), if the sum of the length of train X and Y is 600 meters and both trains running in the opposite direction.
    A 60 km/hr Correct Answer Incorrect Answer
    B 85 km/hr Correct Answer Incorrect Answer
    C 73 km/hr Correct Answer Incorrect Answer
    D 64 km/hr Correct Answer Incorrect Answer
    E 80 km/hr Correct Answer Incorrect Answer

    Solution

    Let speed of train Y be 'a' km/hr. According to question, => 20(35 + a) × (5/18) = 600 => 700 + 20a = 2160 => 20a = 1460 => a = 73 km/hr

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