A train 180 metres long running at 72 km/h crosses a platform 320 metres long. How many seconds does it take to clear the platform completely?
Q1. A train 180 metres long running at 72 km/h crosses a platform 320 metres long. How many seconds does it take to clear the platform completely?
Answer: 25 seconds
Explanation: The train must cover train length plus platform length, totalling 500 m. At 72 km/h (20 m/s), time equals 500 divided by 20, which is 25 seconds.