Two train are running in opposite direction with speed of 62 km/hr and 40 km/hr respectively. If the length of one train is 250 meters and they cross each other in 18 seconds. The length of the other train is ___.
A train of length 150 meters takes 10 seconds to pass over another train 100 meters long coming from the opposite dirction. If the speed of the first train is 30 km/hr. The speed of the second train is ___.