A train 500 meters long is running with a speed of 44 kmph. The time taken by it to cross a tunnel 230 meters long is?  Choices:	A) 287 sec	B) 288 sec	C) 48 sec	D) 61 sec	E) 17 sec
61 sec = 500 + 230= 
<gadget id="calculator">500 + 230</gadget>
<output>730</output>
730   S= 44 * 5/18 = 12 mps   T = 730/12 = 61 sec   Answer: 61 sec
<result>D</result>
A train 500 meters long is running with a speed of 44 kmph. The time taken by it to cross a tunnel 230 meters long is?