A train passes a station platform in 36 seconds and a man standing on the platform in 20 seconds. If the speed of the train is 54 km/hr, what is the length of the platform:
Q1. A train passes a station platform in 36 seconds and a man standing on the platform in 20 seconds. If the speed of the train is 54 km/hr, what is the length of the platform:
Answer: 240
Explanation: Train speed = 54 km/h = 15 m/s; train length = 20 × 15 = 300 m; (platform + train) = 36 × 15 = 540 m → platform = 240 m.