A train 200 m long crosses a platform 150 m long in 20 sec; find the speed of the train?	Choose the correct choice from the following options:
A) 73  B) 63  C) 65  D) 70  E) 83
D = 200 + 150= 
<gadget id="calculator">200 + 150</gadget>
<output>350</output>
350   T= 20   S = 350/20 * 18/5= 
<gadget id="calculator">350/20 * 18/5</gadget>
<output>63</output>
63 kmph.   Answer: 63
<result>B</result>
A train 200 m long crosses a platform 150 m long in 20 sec; find the speed of the train?