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

    Question

    Two trains ‘K’ and ‘L’ of equal lengths are

    running on parallel tracks at speeds of 45 m/s and 55 m/s, respectively. If they can cross each other in ‘u’ seconds while traveling in opposite directions to each other and take 60 seconds to cross each other while traveling in the same direction, then find the value of ‘u’.
    A 5 Correct Answer Incorrect Answer
    B 6 Correct Answer Incorrect Answer
    C 12 Correct Answer Incorrect Answer
    D 10 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, Let the length of train ‘K’ and ‘L’ be ‘k’ metres and ‘l’ metres, respectively. According to the question: Also, Dividing equation (1) by equation (2), we get:

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