2 hours after train A leaves Lucknow a train B leaves the same stationtraveling in the same direction at an average speed of 32 km/hr. After traveling 6 hrsthe train B overtakes the train A. What is the average speed of the train A?  Answers
A) 15 km/hr B) 24 km/hr C) 17 km/hr D) 18.75 km/hr E) None of these
Explanation :   Total distance covered by 24 km/hr=32*6= 
<gadget id="calculator">32*6</gadget>
<output>192</output>
192kmTotal time taken by A to cover same distance=2+6= 
<gadget id="calculator">2+6</gadget>
<output>8</output>
8 hrsaverage speed of A=192/8= 
<gadget id="calculator">192/8</gadget>
<output>24</output>
24 km/hr   Answer : 24 km/hr
<result>B</result>
2 hours after train A leaves Lucknow a train B leaves the same stationtraveling in the same direction at an average speed of 32 km/hr. After traveling 6 hrsthe train B overtakes the train A. What is the average speed of the train A?