A 600 meter long train crosses a signal post in 40 seconds. How long will it take to cross a 5.4 kilometer long bridge, at the same speed?
Answers:
A) 4 min
B) 2 min
C) 8 min
D) 6 min
E) 3 min

Rationale: "s = 600 / 40 = 15 mps s = 5400 / 15 = 360 sec = 6 min . answer : d"
Answer: D