25. Two train 132 metres and 108 metres long are running in opposite directions, one at the rate of 32 kmph and another one at the rate of 40 kmph. From the moment they meet the will cross each other in:

26. Two trains are running in opposite directions with speed of 62 kmph and 40 kmph respectively If the length of one train is 250 metres and they cross each other in 18 seconds, the length of the other train is:

27. A train moves with the speed of 180 km/hr; then its speed in metros per-second is: