Two trains are moving in the same direction at 72 kmph and 36 kmph. The faster train crosses a man in the slower train in 20 seconds. Find the length of the faster train?	Pick one
A) 270  B) 277  C) 200  D) 257  E) 271
Relative speed = (72 - 36) * 5/18 = 2 * 5= 
<gadget id="calculator">2 * 5</gadget>
<output>10</output>
10 mps.   Distance covered in 27 sec= 20 * 10= 
<gadget id="calculator">20 * 10</gadget>
<output>200</output>
200 m.   The length of the faster train= 200 m.   Answer: 200
<result>C</result>
Two trains are moving in the same direction at 72 kmph and 36 kmph. The faster train crosses a man in the slower train in 20 seconds. Find the length of the faster train?