How many seconds will a train 100 meters long take to cross a bridge 200 meters long if the speed of the train is 36 kmph?  Choose the correct answer:
A) 22 sec	B) 27 sec	C) 30 sec	D) 24 sec	E) 11 sec

Rationale: "explanation : d = 100 + 200 = 300 s = 36 * 5 / 18 = 10 mps t = 300 / 10 = 10 sec answer : option c"
Answer: C