How long does a train 120 m long travelling at 60 kmph takes to cross a bridge of 170 m in length?
Pick one
A) 15.8 sec  B) 14.9 sec  C) 12.4 sec  D) 16.8 sec  E) 17.4 sec

Rationale: "e 17.4 sec d = 120 + 170 = 290 m s = 60 * 5 / 18 = 50 / 3 t = 290 * 3 / 50 = 17.4 sec answer is e"
Answer: E