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Q: A train 125 m long passes a man, running at 4 km/hr in the same direction in which the train is going, in 10 seconds. The speed of the train is:

  • 1
    49 kmph
  • 2
    50 kmph
  • 3
    51 kmph
  • 4
    52 kmph
  • Show Answer
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Answer : 1. "49 kmph"
Explanation :

Answer: A) 49 kmph Explanation: Speed of the train relative to man = (125/10) m/sec = (25/2) m/sec. [(25/2) x (18/5)] km/hr = 45 km/hr. Let the speed of the train be 'x' km/hr. Then, relative speed = (x - 4) km/hr. x - 4 = 45 => x = 49 km/hr.

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