If 240 m long train crosses a 250 m long platform in 28 seconds, then what is the speed of the train (in km/h)?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 63
Given:
Length of train = 240 m
length of platform = 250 m
Time = 28 seconds
Formula used:
Speed = Distance/time ---- (1)
Calculations:
Total length = 240 + 250 = 490 m
Using equation (1), we get
⇒ Speed = 490/28 = 70/4 m/s
Speed in km/h = (70/4) × (18/5) = 63 km/h