Question

    Two boys start running simultaneously around a circular

    track of length 200 m from the same point at the speed of 16 km/hr and 20 km/hr respectively. When will they meet for the first time anywhere on the track if they are moving in opposite directions?
    A 18 sec Correct Answer Incorrect Answer
    B 20 sec Correct Answer Incorrect Answer
    C 13 sec Correct Answer Incorrect Answer
    D 10 sec Correct Answer Incorrect Answer
    E 14 sec Correct Answer Incorrect Answer

    Solution

    Time taken to meet for the first time anywhere on the track, => Length of the track/relative speed => 200/ [(16 + 20) × 5/18] => (200 × 18)/ (36 × 5) = 20 seconds

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