Two trains of equal length are running on parallel lines in the same directions at 46km/hr. and 36km/hr. The faster trains pass the slower train in 36 seconds. The length of each train is: Choose the most appropriate option:
A) 82m
B) 50m
C) 72m
D) 80m
E) None of these
Explanation:   The relative speed of train is 46-36= 
<gadget id="calculator">46-36</gadget>
<output>10</output>
10 Km/hr= (10 X 5) / 18 = 25/9 m/s10×518=259m/s   In 36 secs the total distance travelled is 36x25/9 = 100 m.   Therefore the length of each train is = 100/2= 
<gadget id="calculator">100/2</gadget>
<output>50</output>
50 m.   Answer 50m
<result>B</result>
Two trains of equal length are running on parallel lines in the same directions at 46km/hr. and 36km/hr. The faster trains pass the slower train in 36 seconds. The length of each train is: