Find the speed of train B?
Statement I: Ratio of speed of train A and B is 4:5. Ratio of length of train A and B is 7:8. Train A cross a post in 14 sec.
Statement II: Time taken by train B cross 180 m long bridge in 20 sec. Train A cross 140 m long bridge in 22 sec.
1
Only I statement is sufficient
2
Only II statement is sufficient
3
Either I or II statement is sufficient
4
Both I and II statement is not sufficient
5
Both I and II statement is together sufficient