Two trains of equal are running on parallel lines in the same direction at 50 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:
A) 70 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 = 50 - 36= 
<gadget id="calculator">50 - 36</gadget>
<output>14</output>
14 km/hr.= 14 * 5/18 =35/9 m/sec.   2x/36 =35/9 =&gt; x = 70.   70 mNSWER:70 m
<result>A</result>
Two trains of equal are running on parallel lines in the same direction at 50 km/hr and 36 km/hr. The faster train passes the slower train in 36 sec. The length of each train is?