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    Question

    P walks around a circular field at the rate of one round

    per hour while Q runs around it the rate of five rounds per hour. They start at same point at 8:25 am. They shall first cross each other at?
    A 8:50 am Correct Answer Incorrect Answer
    B 8:30 am Correct Answer Incorrect Answer
    C 9 am Correct Answer Incorrect Answer
    D 8:40 am Correct Answer Incorrect Answer

    Solution

    Relative speed between P and Q = 5 – 1 = 4 rounds per hour They will cross when one will complete with relative speed, which is 1/4 hour = 15 minutes So, 8:25am + 15 minutes = 8:40 am

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