2 hours after train A leaves Lucknow a train B leaves the same stationtraveling in the same direction at an average speed of 36 km/hr. After traveling 6 hrsthe train B overtakes the train A. What is the average speed of the train A?  Select the correct option.
A) 22.5 km/hr
B) 16 km/hr
C) 27 km/hr
D) 18 km/hr
E) None of these
Explanation :   Total distance covered by B=36*6= 
<gadget id="calculator">36*6</gadget>
<output>216</output>
216kmTotal time taken by A to cover same distance=2+6= 
<gadget id="calculator">2+6</gadget>
<output>8</output>
8 hrsaverage speed of A=216/8= 
<gadget id="calculator">216/8</gadget>
<output>27</output>
27 km/hr   Answer : 27 km/hr
<result>C</result>
2 hours after train A leaves Lucknow a train B leaves the same stationtraveling in the same direction at an average speed of 36 km/hr. After traveling 6 hrsthe train B overtakes the train A. What is the average speed of the train A?