Multiple choice

Two trains are running in the same direction at 50 km/h and 30 km/h. The faster train crosses a man in the slower train in 30 seconds. Find the length of the faster train.

  1. 168 m

  2. 180 m

  3. 167 m

  4. 200 m

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The man is in the slower train, so the speed of the slower train is equal to the speed of the man.

Now, let the speed of the faster train be L m.

So, using the following formula:

t = L/( V - v)

30 = L/((50 - 30) * 5/18)

L = 166.6 

L = 167 m So, the length of the faster train is 167 m.

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