Marty went on a bike ride to the store 8 miles away. If it took Marty 3/4 of an hour to get there and 1/2 of an hour to get back what was his average rate of speed miles per hour for the entire trip

Answer 1

To find Marty's average rate of speed for the entire trip, we first need to calculate the total time he spent on the trip.

Marty took 3/4 of an hour to get to the store and 1/2 of an hour to get back. Therefore, the total time Marty spent on the trip is:

3/4 + 1/2 = 6/8 + 4/8 = 10/8 = 1 1/4 hours

Next, we calculate the total distance Marty traveled, which is 8 miles to the store and 8 miles back:

8 + 8 = 16 miles

Finally, we can find Marty's average rate of speed for the entire trip by dividing the total distance traveled by the total time spent on the trip:

Average speed = Total distance / Total time
Average speed = 16 miles / 1.25 hours
Average speed = 12.8 miles per hour

Therefore, Marty's average rate of speed for the entire trip was 12.8 miles per hour.