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Home Aptitude Problems on Trains Comments

  • Question
  • Two trains of equal lengths take 10 seconds and 15 seconds respectively to cross a telegraph post. If the length of each train be 120 metres, in what time (in seconds) will they cross each other travelling in opposite direction?


  • Options
  • A. 10
  • B. 12
  • C. 15
  • D. 20

  • Correct Answer
  • 12 

    Explanation
    Speed of the first train = 120 m/sec = 12 m/sec.
    10

    Speed of the second train = 120 m/sec = 8 m/sec.
    15

    Relative speed = (12 + 8) = 20 m/sec.

    ∴ Required time = [ (120 + 120) ] sec = 12 sec.
    20

  • Problems on Trains


    Search Results


    • 1. A jogger running at 9 kmph alongside a railway track in 240 metres ahead of the engine of a 120 metres long train running at 45 kmph in the same direction. In how much time will the train pass the jogger?

    • Options
    • A. 3.6 sec
    • B. 18 sec
    • C. 36 sec
    • D. 72 sec
    • Discuss
    • 2. A train 240 m long passes a pole in 24 seconds. How long will it take to pass a platform 650 m long?

    • Options
    • A. 65 sec
    • B. 89 sec
    • C. 100 sec
    • D. 150 sec
    • Discuss
    • 3. Two trains, each 100 m long, moving in opposite directions, cross each other in 8 seconds. If one is moving twice as fast the other, then the speed of the faster train is:

    • Options
    • A. 30 km/hr
    • B. 45 km/hr
    • C. 60 km/hr
    • D. 75 km/hr
    • Discuss
    • 4. A train overtakes two persons who are walking in the same direction in which the train is going, at the rate of 2 kmph and 4 kmph and passes them completely in 9 and 10 seconds respectively. The length of the train is:

    • Options
    • A. 45 m
    • B. 50 m
    • C. 54 m
    • D. 72 m
    • Discuss
    • 5. Two trains running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively and they cross each other in 23 seconds. The ratio of their speeds is:

    • Options
    • A. 1 : 3
    • B. 3 : 2
    • C. 3 : 4
    • D. None of these
    • Discuss
    • 6. A train 110 metres long is running with a speed of 60 kmph. In what time will it pass a man who is running at 6 kmph in the direction opposite to that in which the train is going?

    • Options
    • A. 5 sec
    • B. 6 sec
    • C. 7 sec
    • D. 10 sec
    • Discuss
    • 7. The length of the bridge, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is:

    • Options
    • A. 200 m
    • B. 225 m
    • C. 245 m
    • D. 250 m
    • Discuss
    • 8. A goods train runs at the speed of 72 kmph and crosses a 250 m long platform in 26 seconds. What is the length of the goods train?

    • Options
    • A. 230 m
    • B. 240 m
    • C. 260 m
    • D. 270 m
    • Discuss
    • 9. A train passes a station platform in 36 seconds and a man standing on the platform in 20 seconds. If the speed of the train is 54 km/hr, what is the length of the platform?

    • Options
    • A. 120 m
    • B. 240 m
    • C. 300 m
    • D. None of these
    • Discuss
    • 10. Two trains of equal length are running on parallel lines in the same direction at 46 km/hr and 36 km/hr. The faster train passes the slower train in 36 seconds. The length of each train is:

    • Options
    • A. 50 m
    • B. 72 m
    • C. 80 m
    • D. 82 m
    • Discuss


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