The average speed for the entire trip from home to the gift store and back is 15 miles per hour
<em><u>Solution:</u></em>
Given that, Starting at home Michael travel uphill to the gift store for 24 minutes after 10 mph
1 hour = 60 minutes
You can travel back home along the same path down hill at a speed of 30 mph
<em><u>The distance is given as:</u></em>
<em><u>Uphill distance:</u></em>
The downhill distance will also be same 4 miles at a speed of 30 mph
<em><u>Find the time taken for down trip</u></em>
Thus, time taken for downtrip = 0.133 hours
Total distance traveled = 4 miles + 4 miles = 8 miles
<em><u>The average speed is given by formula:</u></em>
<em><u>Substituting the values we get,</u></em>
Thus average speed for the entire trip from home to the gift store and back is 15 miles per hour