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      Question

      700 metres long train crosses a man who is moving in the

      same direction with a certain speed, in 25 seconds. If the same train can cross a tree in 14 seconds with the same speed, then find the speed of the man.
      A 21 m/sec Correct Answer Incorrect Answer
      B 20 m/sec Correct Answer Incorrect Answer
      C 22 m/sec Correct Answer Incorrect Answer
      D 28 m/sec Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Speed of train = 700/14 = 50 m/sec Let the speed of the man be ‘s’ m/sec Relative speed of the train = (50 – s) m/sec According to the question, (50 – s) = 700/25 Or, s = 50 – 28 = 22 Therefore, speed of the man = 22 m/sec

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