Two trains are moving in the same direction at 144 kmph and 72 kmph. The faster train crosses a man in the slower train in 19 seconds. Find the length of the faster train?  Select the correct option.
A) 320
B) 340
C) 360
D) 380
E) 400
Relative speed = (144 - 72) * 5/18 = 4 * 5= 
<gadget id="calculator">4 * 5</gadget>
<output>20</output>
20 mps.   Distance covered in 19 sec= 19 * 20= 
<gadget id="calculator">19 * 20</gadget>
<output>380</output>
380 m.   The length of the faster train= 380 m.   Answer:380
<result>D</result>
Two trains are moving in the same direction at 144 kmph and 72 kmph. The faster train crosses a man in the slower train in 19 seconds. Find the length of the faster train?