How long does a train 100 m long travelling at 60 kmph takes to cross a bridge of 120 m in length? Choose the correct choice from the following
A) 15.8 sec	B) 13.2 sec	C) 12.4 sec	D) 16.8 sec	E) 11.8 sec

Rationale: "b 13.2 sec d = 100 + 120 = 220 m s = 60 * 5 / 18 = 50 / 3 t = 220 * 3 / 50 = 13.2 sec answer is b"
Answer: B