If a 250 m long train crosses a platform of same length as that of the train in 25 seconds, then the speed of the train is:

A. 150 m/sec

B. 200 m/sec

C. 20 km/h

D. 72 km/h

Answer: Option D

Solution(By Examveda Team)

Speed of train
= $$\frac{{{\text{length of the train}} + {\text{length of platform}}}}{{{\text{Time}}}}$$
= $$\frac{{250 + 250}}{{25}}$$
= 20 m/sec
= 72 km/h