Two trains of equal length are running on parallel line's in the same direction at 46 km / hr and 36 km / hr. The faster train passes the slower train in 36 seconds. The length of each train is `50\ m` b. `72\ m` c. `80\ m` d. `82\ m`

Two trains of equal length are running on parallel linel's in the same direction at 46km/ hr and 36km/hr .The faster train passes the slower train in 36 seconds.The length of each train is 50backslash m b.72backslash m c.80backslash m d.82backslash m

Two trains are running on parallel lines in the same direction at a speed of 50 km. and 30 km per hour respectively. The faster train crosses a man in slower train in 18 seconds. The length of the faster train is: