A train 150 meters long completely crosses a 240 meters long bridge in 42 seconds. What is the speed of the train is?  Choose the correct choice from the following answers
A) 32  B) 33  C) 88  D) 66  E) 09

Rationale: "s = ( 150 + 240 ) / 42 = 390 / 42 * 18 / 5 = 33 answer : b"
Answer: B