Two trains of equal length are running on parallel lines in the same directions at 46km/hr. and 36km/hr. The faster trains pass the slower train in 144 seconds. The length of each train is:	Choose the correct option
A) 82m	B) 150m	C) 172m	D) 200m	E) None of these
Explanation:   The relative speed of train is 46-36= 
<gadget id="calculator">46-36</gadget>
<output>10</output>
10 Km/hr= (10 X 5) / 18 = 25/9 m/s10×518=259m/s   In 144 secs the total distance traveled is 144x25/9 = 400 m.   Therefore the length of each train is = 400/2= 
<gadget id="calculator">400/2</gadget>
<output>200</output>
200 m.   Answer 200m
<result>D</result>
Two trains of equal length are running on parallel lines in the same directions at 46km/hr. and 36km/hr. The faster trains pass the slower train in 144 seconds. The length of each train is: