A bicyclist travels uphill from town A to town B for 2 hours at an average speed of 7 miles per hour and returns along the same road at an average speed of 6 miles per hour. What is the bicyclist’s average speed for the round trip, in miles per hour?  Choices
A) (a) 24/5
B) (b) 5
C) (c) 26/5
D) (d) 84/13
E) (e) 28/5
from the uphill we can find out the distance = 7*2= 
<gadget id="calculator">7*2</gadget>
<output>14</output>
14   average speed= total distance/total time   = 28/ (2+ (14/6)) = 84/13   Answer is (d) 84/13.
<result>D</result>
A bicyclist travels uphill from town A to town B for 2 hours at an average speed of 7 miles per hour and returns along the same road at an average speed of 6 miles per hour. What is the bicyclist’s average speed for the round trip, in miles per hour?