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

    Question

    3 runners run together in the same direction from a

    place on a circular path of 16 km and their speeds are 4, 6, and 8 km/h, in how many hours will they meet at the same place?
    A 7h Correct Answer Incorrect Answer
    B 8h Correct Answer Incorrect Answer
    C 5h Correct Answer Incorrect Answer
    D 10h Correct Answer Incorrect Answer

    Solution

    Total distance = 16 km Time taken by the first person to complete the round = 16/4 = 4 hours second person to complete the round = 16/6 = 8/3 hours and time taken by the third person = 16/8 = 2 hours Time of meet = LCM of 4 ,8/3 and 2 = 8 hours

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