Answer: 3 miles per hour.
Step-by-step explanation:
Given : Aubrey can walk
miles in
hours.
We can first convert the mixed fraction into improper fraction.
i.e. Distance =
Time =
Now, the average speed in miles per hour =
i.e. the average speed in miles per hour =
i.e. the average speed in miles per hour =
i.e. the average speed in miles per hour =
Hence, her average speed is 3 miles per hour.