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Home Aptitude Problems on Trains Comments

  • Question
  • Two trains are running at 40 km/hr and 20 km/hr respectively in the same direction. Fast train completely passes a man sitting in the slower train in 5 seconds. What is the length of the fast train?


  • Options
  • A. 23 m
  • B. 23 29
  • C. 27 79
  • D. 29 m

  • Correct Answer
  • 27 79 

    Explanation
    Relative speed = (40 - 20) km/hr = 20 x 5 m/sec = 50 m/sec.
    18 9

    ∴ Length of faster train = 50 x 5 m = 250 m = 27 7 m.
    9 9 9

  • Problems on Trains


    Search Results


    • 1. A train overtakes two persons walking along a railway track. The first one walks at 4.5 km/hr. The other one walks at 5.4 km/hr. The train needs 8.4 and 8.5 seconds respectively to overtake them. What is the speed of the train if both the persons are walking in the same direction as the train?

    • Options
    • A. 66 km/hr
    • B. 72 km/hr
    • C. 78 km/hr
    • D. 81 km/hr
    • Discuss
    • 2. How many seconds will a 500 metre long train take to cross a man walking with a speed of 3 km/hr in the direction of the moving train if the speed of the train is 63 km/hr?

    • Options
    • A. 25
    • B. 30
    • C. 40
    • D. 45
    • Discuss
    • 3. Two trains 140 m and 160 m long run at the speed of 60 km/hr and 40 km/hr respectively in opposite directions on parallel tracks. The time (in seconds) which they take to cross each other, is:

    • Options
    • A. 9
    • B. 9.6
    • C. 10
    • D. 10.8
    • Discuss
    • 4. Two, trains, one from Howrah to Patna and the other from Patna to Howrah, start simultaneously. After they meet, the trains reach their destinations after 9 hours and 16 hours respectively. The ratio of their speeds is:

    • Options
    • A. 2 : 3
    • B. 4 : 3
    • C. 6 : 7
    • D. 9 : 16
    • Discuss
    • 5. A train 800 metres long is running at a speed of 78 km/hr. If it crosses a tunnel in 1 minute, then the length of the tunnel (in meters) is:

    • Options
    • A. 130
    • B. 360
    • C. 500
    • D. 540
    • Discuss
    • 6. A train moves past a telegraph post and a bridge 264 m long in 8 seconds and 20 seconds respectively. What is the speed of the train?

    • Options
    • A. 69.5 km/hr
    • B. 70 km/hr
    • C. 79 km/hr
    • D. 79.2 km/hr
    • Discuss
    • 7. A train speeds past a pole in 15 seconds and a platform 100 m long in 25 seconds. Its length is:

    • Options
    • A. 50 m
    • B. 150 m
    • C. 200 m
    • D. Data inadequate
    • Discuss
    • 8. A 300 metre long train crosses a platform in 39 seconds while it crosses a signal pole in 18 seconds. What is the length of the platform?

    • Options
    • A. 320 m
    • B. 350 m
    • C. 650 m
    • D. Data inadequate
    • Discuss
    • 9. A train travelling at a speed of 75 mph enters a tunnel 3½ miles long. The train is ¼ mile long. How long does it take for the train to pass through the tunnel from the moment the front enters to the moment the rear emerges?

    • Options
    • A. 2.5 min
    • B. 3 min
    • C. 3.2 min
    • D. 3.5 min
    • Discuss
    • 10. Two trains are running in opposite directions with the same speed. If the length of each train is 120 metres and they cross each other in 12 seconds, then the speed of each train (in km/hr) is:

    • Options
    • A. 10
    • B. 18
    • C. 36
    • D. 72
    • Discuss


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