Q. A train moving at 72 km/h crosses a platform in 20 seconds. If the train is 200 m long, what is the platform length?
✅ Correct Answer: (C)
200 m
Explanation: Speed = 20 m/s → Distance = 20×20 = 400 m → Platform = 400−200 = 200 m.
Explanation by: Hriday
Speed = 20 m/s → Distance = 20×20 = 400 m → Platform = 400−200 = 200 m.