Two trains of equal are running on parallel lines in the same direction at 46 km/hr and 36 km/hr. The faster train passes the slower train in 36 sec. The length of each train is?	Choose the correct choice from the following choices:
A) 50 m	B) 72 m	C) 80 m	D) 82 m	E) 84 m
Let the length of each train be x m.   Then, distance covered = 2x m.   Relative speed = 46 - 36= 
<gadget id="calculator">46 - 36</gadget>
<output>10</output>
10 km/hr.= 10 * 5/18 = 25/9 m/sec.   2x/36 = 25/9 =&gt; x = 50.   50 mNSWER:50 m
<result>A</result>
Two trains of equal are running on parallel lines in the same direction at 46 km/hr and 36 km/hr. The faster train passes the slower train in 36 sec. The length of each train is?