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    Question

    Two trains β€˜G’ and β€˜H’ of equal lengths are

    running on parallel tracks at speeds of 30 m/s and 90 m/s, respectively. If they can cross each other in β€˜w’ seconds while traveling in opposite directions to each other and take 45 seconds to cross each other while traveling in the same direction, then find the value of β€˜w’.
    A 55.1 Correct Answer Incorrect Answer
    B 62.5 Correct Answer Incorrect Answer
    C 22.5 Correct Answer Incorrect Answer
    D 10.22 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, Let the length of train β€˜G’ and β€˜H’ be β€˜g’ metres and β€˜h’ metres, respectively. According to the question: Also, Let the length of train β€˜G’ and β€˜H’ be β€˜g’ metres and β€˜h’ metres, respectively. According to the question:

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