A train 90 meters long completely crosses a 270-meter long bridge in 36 seconds. What is the speed of the train in km/h? Choose the correct option.
A) 28 km/h	B) 32 km/h	C) 36 km/h	D) 40 km/h	E) 44 km/h
speed = distance / time = (90 + 270)/36 = 360/36 (m/s) * 3600/1000 = 36 km/h   The answer is 36 km/h.
<result>C</result>
A train 90 meters long completely crosses a 270-meter long bridge in 36 seconds. What is the speed of the train in km/h?