EXPLANATION:
The ratio given is 1 inch equals 13.1 miles. That means 2 inches would be 13.1 miles times 2, and so on.
Therefore, if two cities are 2.5 inches apart on the map, then;
[tex]\begin{gathered} 1\text{inch}=13.1\text{mile} \\ 2.5in=13.1(2.5)\text{miles} \\ 2.5in=32.75miles \end{gathered}[/tex]Hence, the two cities are actually 32.75 miles apart
