Answer
The scale is 1 inch:70 miles.
Work Step by Step
Using the real world distance between the towns, we can solve for the scale of the map.
$\frac{1}{m}=\frac{2.5}{175}$ cross multiply
$175=2.5m$ divide both sides by 2.5
$175\div2.5=2.5m\div2.5$
$70=m$
