Problems on Trains

SSC CGL · Quantitative Aptitude · 12 practice questions with answers and explanations: 2 Easy, 6 Medium, 4 Hard.

Sample questions

Sample Easy question 1

A 150 m long train running at 54 km/h passes a signal post. How many seconds does it take?

  1. 10
  2. 5
  3. 15
  4. 8
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Answer: A. 54 km/h = 15 m/s. Time = 150 ÷ 15 = 10 seconds.

Sample Medium question 2

A train running at 90 km/h crosses a 400 m platform in 24 seconds. Find the length of the train.

  1. 200
  2. 250
  3. 150
  4. 100
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Answer: A. Speed = 25 m/s; distance in 24 s = 600 m = train + platform. Train = 600 − 400 = 200 m.

Sample Hard question 3

Two trains, 140 m and 160 m long, run in opposite directions and cross each other in 12 seconds. If one runs at 36 km/h, find the speed of the other.

  1. 54
  2. 45
  3. 72
  4. 60
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Answer: A. Relative speed = 300 ÷ 12 = 25 m/s = 90 km/h. Other train = 90 − 36 = 54 km/h.

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