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      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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