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  • Question

  • A uniformly moving train of length 480 m takes 3 minutes to completely cross a platform. If the same train, with the same speed crosses a pole completely in 30 sec, then the length of the platform is -


  • Options
  • A. 1 km
  • B. 600 m
  • C. 4.8 km
  • D. 1.2 km

  • Correct Answer
  •  

    Explanation

    Let length of platform be ?y?metres.

    Then, at the platform,Distance travelled = y + (length of train) = (y + 480)m

    Then, Speed of train = (y + 480)m / (3x60) sec = (y+480)/180 ...(1)

    Also, at the pole,Distance travelled = length of train = 480m

    Then, Speed of train = 480m / 30sec = 16 m/s ...(2)

    Equating eq.(1) & eq.(2), we get,

    (y+480)/180 = 16(y+480) = 16 x 180 = 2880

    y = 2880 ?480 = 2400m or 2.4 km long platform.

    • Tags: Bank Exams, Bank PO, Bank Clerk

    Problems on Trains

    Search Results

    • 1. Train A takes 1 hour more than train B to travel a distance of 720 km. Due to engine trouble speed of train B falls by a third, so it takes 3 hours more than Train A to complete the same journey? What is the speed of Train A (in km/hr)?

    • Options
    • A. 80
    • B. 90
    • C. 60
    • D. 70
      • Discuss
    • 2. A train is moving at the speed of 72 km/hr. How many seconds will it take to cover a distance of 1400 m ?

    • Options
    • A. 70
    • B. 80
    • C. 72
    • D. 84
      • Discuss
    • 3. The ratio of the speed of Two trains is 5:8. Sum of their length is 660. The ratio of time taken to cross an Electric Pole by train A and B is 4:3. What is the difference between the length of two trains?

    • Options
    • A. 50m
    • B. 40m
    • C. 60m
    • D. 45m
      • Discuss
    • 4. Train A can cross a man in 8 sec and a 180 m long platform ?P? in 17 sec. If train A cross train B which is running in opposite direction at speed of 108 km/hr in 8 sec, then find time taken by train B to cross platform P?

    • Options
    • A. 16 sec
    • B. 11 sec
    • C. 14 sec
    • D. 12 sec
      • Discuss
    • 5. A jogger running at 9 kmph alongside a railway track is 240 metres ahead of the engine of a 120 metre long train running at 45 kmph in the same direction. In how much time will the train pass the jogger ?

    • Options
    • A. 10 sec
    • B. 48 sec
    • C. 36 sec
    • D. 56 sec
      • Discuss
    • 6. A train covers a distance of 12 km in 10 min. If it takes 6 sec to pass a telegraph post, the length of the train is

    • Options
    • A. 90 m
    • B. 100 m
    • C. 120 m
    • D. 140 m
      • Discuss
    • 7. A passenger train running at the speed of 80 kms/hr leaves the railway station 6 hours after a goods train leaves and overtakes it in 4 hours. What is the speed of the goods train?

    • Options
    • A. 32 kms/hr
    • B. 50 kms/hr
    • C. 45 kms/hr
    • D. 64 kms/hr
      • Discuss
    • 8. A train left from station A for station B at 4 pm at an average speed of 80 kmph. At 8 pm, another train also had left from station A for station B on a parallel track at an average speed of 120 kmph. How far from A is another train expected to overtake the first train?

    • Options
    • A. 900km
    • B. 940km
    • C. 960km
    • D. 980km
      • Discuss
    • 9. A train travels 40% faster than a car. Both start from point A at the same time and reach point B, 140 km away at the same time. On the way the train takes 25 minutes for stopping at the stations. What is the speed (in km/hr) of the train?

    • Options
    • A. 67
    • B. 134.4
    • C. 145.9
    • D. 160
      • Discuss
    • 10. The time for a train of length 110 metres running at the speed of 72 km/hr to cross a bridge of length 132 metres is

    • Options
    • A. 9.8 sec
    • B. 12.1 sec
    • C. 12.42 sec
    • D. 14.3 sec
      • Discuss

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