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      Question

      1600 metres long train crosses a man who is moving in

      the same direction with a certain speed, in 16 seconds. If the same train can cross a tree in 10 seconds with the same speed, then find the speed of the man.
      A 60 m/sec Correct Answer Incorrect Answer
      B 20 m/sec Correct Answer Incorrect Answer
      C 50 m/sec Correct Answer Incorrect Answer
      D 40 m/sec Correct Answer Incorrect Answer

      Solution

      Speed of train = 1600/10 = 160 m/sec Let the speed of the man be โ€˜sโ€™ m/sec Relative speed of the train = (160 โ€“ s) m/sec According to the question, (160 โ€“ s) = 1600/16 Or, s = 160 โ€“ 100 = 60 Therefore, speed of the man = 60ย m/sec

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