The length of Lucknow mail is 120m 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 120m and that of punjab mail is 80 m. Th

1.	The length of Lucknow mail is 120m 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 ?
A.	8 sec.
B.	72 sec.
C.	11.5 sec.
D.	12.5 sec.
Answer» C. 11.5 sec.

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The length of Lucknow mail is 120m 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 ?

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