Question

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
GPT 3.5
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.

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