A train passes a 500 m long platform in 12 seconds, and a man standing on the platform in four seconds. Find the speed of the train.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 225 km/h.
Let train speed = x m/sec
Length of the train = 4x
The train passes the platform:
⇒ 4x + 500 = 12x
⇒ 8x = 500
⇒ x = 62.5 m/sec
⇒ 62.5 × = 225 km/hr