A train 250 meters long completely crosses a 300 meters long bridge in 45 seconds. What is the speed of the train is?	Options:
A) 32 B) 28 C) 29 D) 44 E) 21
S = (250 + 300)/45 = 550/45 * 18/5= 
<gadget id="calculator">550/45 * 18/5</gadget>
<output>44</output>
44   Answer: 44
<result>D</result>
A train 250 meters long completely crosses a 300 meters long bridge in 45 seconds. What is the speed of the train is?