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 12 seconds. Find the length of the faster train?
Choose the correct choice from the following options.
A) 270 B) 288 C) 266 D) 120 E) 126
Relative speed = (72 - 36) * 5/18 = 2 * 5= 
<gadget id="calculator">2 * 5</gadget>
<output>10</output>
10 mps.   Distance covered in 12 sec= 27 * 10= 
<gadget id="calculator">27 * 10</gadget>
<output>270</output>
270 m.   The length of the faster train= 120 m.   Answer: 120
<result>D</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 12 seconds. Find the length of the faster train?