S = 600/60 = 10 mps
S = 3600/10 = 360 sec = 6 min
A 600 meter long train crosses a signal post in 60 seconds. How long will it take to cross a 3 kilometer long bridge, at the same speed?
Options:
(1) 4 min
(2) 2 min
(3) 6 min
(4) 9 min
(5) 5 min