The time taken by Train A to cross the pole is 36 sec and the speed of Train A is 72 km/hr. The ratio of the length of Train A and Train B is 2: 1. The time taken by Train A and B to cross each other from opposite directions is 21.6 sec. If Train B crosses the platform in 16 sec, then find the length of the platform.
1
160 m
2
150 m
3
120 m
4
140 m
5
130 m