A train 150 meters long completely crosses a 320 meters long bridge in 40 seconds. What is the speed of the train is? Choices
A) 32 B) 42 C) 54 D) 66 E) 09
S = (150 + 320)/40 = 470/40 * 18/5 = 42   Answer: 42
<result>B</result>
A train 150 meters long completely crosses a 320 meters long bridge in 40 seconds. What is the speed of the train is?