A train 100 meters long completely crosses a 300 meters long bridge in 15 seconds. What is the speed of the train is?  Choose the correct choice from the following answers: A) 32 kmph B) 96 kmph C) 34 kmph D) 43 kmph E) 40 kmph

Rationale: "s = ( 100 + 300 ) / 45 = 400 / 15 * 18 / 5 = 96 answer : b"
Answer: B