Two trains of equal length are running on parallel lines in the same direction at 46 km/hr and 36 km/hr. If the faster train passes the slower train in 36 seconds,what is the length of each train? Choose the correct choice from the following answers:
A) 50 m B) 80 m C) 76 m D) 58 m E) 90 m
let length of each train = x m   total distance while passing the slower train = (x+x) = 2x m   relative speed = (46-36)= 
<gadget id="calculator">(46-36)</gadget>
<output>10</output>
10 km/hr=10*5/18 = 50/18 m/s   time = 36 sec   2x/36 = 50/18 =&gt; x=50   50 mNSWER 50 m
<result>A</result>
Two trains of equal length are running on parallel lines in the same direction at 46 km/hr and 36 km/hr. If the faster train passes the slower train in 36 seconds,what is the length of each train?