S = 600/20 = 1530 mps
S = 3600/30 = 120 sec = 2 min
A 600 meter long train crosses a signal post in 20 seconds. How long will it take to cross a 3 kilometer long bridge, at the same speed?
Options:
- 4 min
- 2 min
- 8 min
- 9 min
- 5 min