Answer:
0.7941 miles
Step-by-step explanation:
I would think of this situation as a giant ruler.
The 18 trash cans can be thought of as endpoints on intervals in this giant ruler.
1--------2 --------3 --------4-----------5
If you notice the numbers that I wrote, there are five of them, but there are 4 intervals.
So we need to minus one from 18 to get 17 equal length intervals so that the trash cans are equally spaced.
Interval length = 13.5 miles / 17 intervals = 0.7941 miles
