Two trains 240 metres and 270 metres in length are running towards each other on parallel lines, one at the rate of 60 kmph and another at 48 kmph. How much time will they take to cross each other?

Two trains 240 metres and 270 metres in length are running towards each other on parallel lines,one at the rate of 60kmph and another at 48kmph .How much time will they take to cross each other?

Two trains 137 metres and 163 metres in length are running towards each other on parallel lines, one at the rate of 42 kmph and another at 48 kmph. In what time will they be clear of each other from the moment they meet?

Two trains 130 m and 110 m in length are running towards each other on parallel tracks, one at the rate of 32 km/h and another at 40 km/h. In what time will they be clear each other from the moment they meet?

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 trains one 160 m and the other 140 m long are running in opposite directions on parallel rails, the first at 77 km an hour and the other at 67 km an hour. How long will they take to cross each other?