A train 500 meters long completely crosses a 300 meters long bridge in 45 seconds. What is the speed of the train is?
Select
A) 32  B) 28  C) 49  D) 64  E) 21
S = (500 + 300)/45 = 800/45 * 18/5= 
<gadget id="calculator">800/45 * 18/5</gadget>
<output>64</output>
64   Answer: 64
<result>D</result>
A train 500 meters long completely crosses a 300 meters long bridge in 45 seconds. What is the speed of the train is?