A train 200 m long crosses a platform 200 m long in 40 sec; find the speed of the train?  Answers
A) 94 kmph B) 58 kmph C) 54 kmph D) 94 kmph E) 36 kmph
D = 200 + 200= 
<gadget id="calculator">200 + 200</gadget>
<output>400</output>
400   T= 40   S = 400/40 * 18/5= 
<gadget id="calculator">400/40 * 18/5</gadget>
<output>36</output>
36 kmph   Answer:36 kmph
<result>E</result>
A train 200 m long crosses a platform 200 m long in 40 sec; find the speed of the train?