Two trains of equal length are running on parallel lines in the same direction at 46 km/hr and 36 km/hr. The faster train catches and completely passes the slower train in 45 seconds. What is the length of each train (in meters)?	Choose the correct choice from the following options.
A) 48.5
B) 62.5
C) 73.5
D) 87.5
E) 96.5
The relative speed = 46 - 36= 
<gadget id="calculator">46 - 36</gadget>
<output>10</output>
10 km/hr= 10 * 5/18 = 25/9 m/s   In 45 seconds, the relative difference in distance traveled is  45 * 25/9= 
<gadget id="calculator"> 45 * 25/9</gadget>
<output>125</output>
125 meters   This distance is twice the length of each train.   The length of each train is  125/2= 
<gadget id="calculator"> 125/2</gadget>
<output>125/2 = around 62.5</output>
62.5 meters   The answer is 62.5.
<result>B</result>
Two trains of equal length are running on parallel lines in the same direction at 46 km/hr and 36 km/hr. The faster train catches and completely passes the slower train in 45 seconds. What is the length of each train (in meters)?