How long does a train 110 m long traveling at 72 kmph takes to cross a bridge of 170 m in length?	Choose the correct choice from the following answers.
A) 16.5
B) 16.0
C) 16.4
D) 14
E) 16.1

Rationale: "d = 110 + 170 = 280 m s = 72 * 5 / 18 = 20 t = 280 * 1 / 20 = 14 sec answer : d"
Answer: D