Problems on Trains - General Questions

A train 500 m long passes a man running at 2 km/hr in the same direction in 25 seconds. What is the speed of the train?

A train passes a station platform in 37 seconds and a man standing on the platform in 19 seconds. If the speed of the train is 57.6 km/hr, what is the length of the platform?

How many seconds will a train 150 m long running at 72 km/hr take to cross a bridge 150 m long?

Two trains of lengths 100 m and 540 m run on parallel lines in the same direction at 90 km/hr and 18 km/hr. How long does the faster train take to pass the slower one completely?

Two trains of lengths 220 m and 235 m run on parallel lines in the same direction at 99 km/hr and 36 km/hr. How long does the faster train take to pass the slower one completely?