The length of the train A is ‘a’ m and the length of the platform is ‘2a’ m.If the speed of the train A is 30 m/s it can cross the platform in 27 seconds. If the train A can cross the running train B in the opposite direction can cross in 10 seconds whose speed is 36 kmph. If train B crosses the same platform. Find the time taken by train B to cross the platform.
1
52 seconds
2
59 seconds
3
67 seconds
4
54 seconds
5
69 seconds