Train A running with the speed of 36 km/hr crosses a pole in 20 seconds. Another train B whose length is 100 metre more than length of train A is running with the speed of 18 km/hr. Find the time taken by train B to cross a platform of length 500 metre.
1
200 seconds
2
150 seconds
3
160 seconds
4
140 seconds
5
None of these