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

    Question

    Train A running at a speed of 46 km/hr. crosses train B

    in 30 seconds. Find the speed of train B (in km/hr), if the sum of the length of train A and B is 500 meters and both trains running in the opposite direction.
    A 22 km/hr. Correct Answer Incorrect Answer
    B 14 km/hr. Correct Answer Incorrect Answer
    C 18 km/hr. Correct Answer Incorrect Answer
    D 68 km/hr. Correct Answer Incorrect Answer
    E 35 km/hr. Correct Answer Incorrect Answer

    Solution

    Let speed of train B be ‘x’ km/hr. According to question, => 30(46 + x) × (5/18) = 500 => 1380 + 30x = 1800 => 30x = 420 => x = 14 km/hr.

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