Answer:
The answer is 27 miles.
Explanation:
Because Nathan walked 6 miles in 2 hours. So if u multiply 9 by 3 it will be 27. Now you must be confused that where did 3 come from? Well, if u add 6+2 (four times) and then add 3, your answer will be 27.
In an easy explanation
6+6+6+6+3 =27.
Hope this helps you!