Aptitude - Problem on Trains

MCQ

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Q 11.

Two trains A and B are running at 40 kph and 20 kph respectively. If the faster train completely passes a man sitting in the slower train in 5 seconds then what is the length of the faster train.

Options:

  • 26 7   m
    9
  • 27 7   m
    9
  • 28 7   m
    9
  • 25 7   m
    9
Q 12.

Train A and B are running in opposite direction and approaching a station. If they cross a man standing on the platform in 27 sec and 17 sec respectively and they cross each other in 23 sec. Find the ratio of their speeds.

Options:

  • 3:2

  • 2:1

  • 4:5

  • 3:5

Let ratio of their speed be x:y

Length of A = 27x

Length of B = 17y

so, (27x + 17y) / (x + y) = 23

or, x/y = 3/2

Q 13.

Two trains, each 100m long are running in opposite direction. If it takes 8 seconds for them to cross each other and one train is moving twice as fast as the other. Then, what is the speed of the faster train.

Options:

  • 58 kph

  • 60 kph

  • 40 kph

  • 50 kph

Q 14.

There are two trains A and B running between city X and Y. Train A starts from city X to city Y and train B starts from city Y to X. After they meet, they reach their destinations after 9 hours and 16 hours respectively. Find the ratio of their speed.

Options:

  • 4:3

  • 3:5

  • 4:1

  • 6:7

Q 15.

Find the time taken by a 100 m long train running at 144 kph to cross an electric pole.

Options:

  • 2.5 sec

  • 3.5 sec

  • 4.5 sec

  • 5.5 sec

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