A train 860 m long is running at 108 km/h. How long will it take to cross a platform 220 m long?

💡 Solution & Explanation

To cross a platform, the train covers its own length plus the platform: 860 + 220 = 1080 m. Speed = 108 × 5/18 = 30 m/s. Time = 1080 ÷ 30 = 36 seconds. Using only the train's length gives 28.67 seconds, which is the time to pass a pole, not a platform.