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 passes the slower train in 27 seconds. What is the length of each train (in meters)?  Options
A) 50.5 B) 88.5 C) 37.5 D) 55.5 E) 23.5
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 27 seconds, the relative difference in distance traveled is  27 * 25/9= 
<gadget id="calculator"> 27 * 25/9</gadget>
<output>75</output>
75 meters   This distance is twice the length of each train.   The length of each train is  75/2= 
<gadget id="calculator"> 75/2</gadget>
<output>75/2 = around 37.5</output>
37.5 meters   The answer is 37.5.
<result>C</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 passes the slower train in 27 seconds. What is the length of each train (in meters)?