Q. A train 100 m long crosses a platform in 20 seconds at 36 km/h. What is the platform length?
✅ Correct Answer: (B)
100 m
Explanation: Speed = 10 m/s → Distance = 200 m → Platform = 200−100 = 100 m.
Explanation by: Hriday
Speed = 10 m/s → Distance = 200 m → Platform = 200−100 = 100 m.