New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    A 250-meter-long train crosses a 150-meter-long train

    coming from the opposite direction in 20 seconds. If the speed of the first train is 45 km/h, then find the speed of the second train.
    A 24km/h Correct Answer Incorrect Answer
    B 27km/h Correct Answer Incorrect Answer
    C 32km/h Correct Answer Incorrect Answer
    D 18km/h Correct Answer Incorrect Answer

    Solution

    When two trains moving in opposite directions cross each other, the sum of their lengths is their total distance. The length of the first train = 250 meters and length of the second train = 150 meter Total distance = 250+150 = 400 meter Time = 20second Then Total speed in km/h = 400/20 × 18/5 = 72 km/h Speed of First train = 45 km/h Speed of second train = 72-45 = 27 km/h

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