It takes Joey the postman 1 hours to run a 2 mile long route every day. He delivers packages and then returns to the post office along the same path. If the average speed of the round trip is 5 mile/hour, what is the speed with which Joey returns?
Options
A) 10
B) 12
C) 13
D) 14
E) 15
let his speed for one half of the journey be 2 miles an hour   let the other half be x miles an hour   now,   avg speed =5 mile an hour   2*2*x/2+x=5   4x=5x+10=&gt;x=10   10
<result>A</result>
It takes Joey the postman 1 hours to run a 2 mile long route every day. He delivers packages and then returns to the post office along the same path. If the average speed of the round trip is 5 mile/hour, what is the speed with which Joey returns?