How long does a train 110 m long traveling at 60 kmph takes to cross a bridge of 390 m in length?
Pick.
A) 18.9 sec
B) 88.9 sec
C) 22.9 sec
D) 30.00 sec
E) 72.0 sec

Rationale: "d = 110 + 390 = 500 m s = 60 * 5 / 18 = 50 / 3 t = 500 * 3 / 50 = 30 sec answer : d"
Answer: D