A train 100 m long crosses a platform 125 m long in 40 sec; find the speed of the train?  Choose the correct option:	A) 36.21	B) 77.11	C) 54.12	D) 33.0	E) 20.25
D = 100 + 125= 
<gadget id="calculator">100 + 125</gadget>
<output>225</output>
225   T= 40   S = 225/40 * 18/5= 
<gadget id="calculator">225/40 * 18/5</gadget>
<output>81/4 = around 20.25</output>
20.25 kmph   Answer: 20.25
<result>E</result>
A train 100 m long crosses a platform 125 m long in 40 sec; find the speed of the train?