The length of Kanpur mail is 120 m and that of Punjab mail is 80 m. These two trains are running in the same direction with speeds of 40 km/h respectively.The time taken by them to cross each other is :

The length of Kanpur mail is 120m and that of Punjab mail is 80m. These two trains are running in the same direction with speeds of 40km/h respectively.The time taken by them to cross each other is:

The length of Lucknow mail is 120 m and that of Punjab mail is 80 m. These two trains are running in the same direction with velocities of 40 km/h and 50 km/h respectively. The time taken by them to cross each other is :

The length of Lucknow mail is 120 m and that of Punjab mail is 80 m These two trains are runing in the same direction with velocities of 40 km/h and 50 km/h respectively.The time taken by them to cross each other is:

The length of Lucknow mail is 120 m and that of Punjab mail is 80 m. These two trains are running in the opposite direction with velocities of 40 km/h and 50 km/h respectively. The time taken by them to cross each other is :

The length of Lucknow mail is 120 m and that of Punjab mail is 80 m These two trains are runing in the opposite direction with velocities of 40 km/h and 50 km/h respectively.The time taken by them to cross each other is:

Two trains of lengths 100 m and 150 m are travelling in opposite directions at speeds of 75 kmph and 50 kmph respectively. What is the time taken by them to cross each other?