Two trains 100 metres and 120 metres long are running in the same direction with speed of 72 km/hr and 54 km/hr. In how much time will the first train cross the second?

Two trains 100 metres and 120 metres long are running in the same direction with speed of 72km/hr and 54km/hr. In how much time will the first train cross the second?

Two trains are moving in the same direction at the speed of 24 km/hr and 50 km/hr. The time taken by faster train to cross a man sitting in the slower train is 72 seconds. What will be the length (in metres) of the faster train?

Two trains 90 metres and 120 metres long are running in opposite directions, one at the rate of 30 km/hr and another one at the rate of 60 km/hr. From the moment they meet they will cross each other in:

Two train are of lengths 150 metre and 250 metre respectively. Trains are running at the speed of 45 km/hr and 65 km/hr respectively in same direction What will be the time taken by second train to cross the first train ?