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Home Aptitude Time and Distance See What Others Are Saying!
  • Question
  • A man in a train notices that he can count 41 telephone posts in one minute. If they are known to be 50 metres apart, then at what speed is the train travelling?


  • Options
  • A. 60 km/hr
  • B. 100 km/hr
  • C. 110 km/hr
  • D. 120 km/hr

  • Correct Answer
  • 120 km/hr 

    Explanation

    Number of gaps between 41 poles = 40
    So total distance between 41 poles = 40*50
    = 2000 meter = 2 km
    In 1 minute train is moving 2 km/minute.
    Speed in hour = 2*60 = 120 km/hour

  • Tags: GRE

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