Hi,         

Note:  Distance traveled at each speed is the same.

Average speed for the entire trip:  (3mph + 5mph) / 2 = 4mph 

Answer by richard1234(7193)   (Show Source): You can put this solution on YOUR website!
 Suppose the walk was 15 miles each way (the distance doesn't matter, we can pick x miles if we wish). That means it takes 5 hours to walk there and 3 hours to walk back. You went 30 miles total, so the average speed is (30 miles)/(8 hours) = 3.75 mph. 

RELATED QUESTIONS

Ted walks from his home to the post office at an average rate of 3 miles per hour. He... (answered by Alan3354)

Ted walks from his home to the post office at an average rate of 3 miles per hour. he... (answered by josgarithmetic)

Remy walked to a friend's house, m miles away, at an average rate of 4 mph. The m-mile... (answered by stanbon)

You walk an average 3.2 mph on the way to school, and at an average of 4 mph on the way... (answered by ikleyn)

You run two miles at an average speed of 8 mi/hr and then walk back at a rate of 4 mi/hr.  (answered by ewatrrr)

in the morning you traveled at an average speed of 25 miles per hour (mph) to get to... (answered by ankor@dixie-net.com)

If you walk for 1.5 hours at 3 mph, how fast should you run during the next 0.5 hours to... (answered by jorel555)

Carol has 8 hours to spend on a hike up a mountain and back again. She can walk up the... (answered by ankor@dixie-net.com)

Karen jogged at an average rate of 8 mph from her house to school. She walked home at a... (answered by TimothyLamb)