1 The scale of a map is 8 inch = 10 miles. If 2 cities are 3 inches apart on the map, how many miles are they from each other?

Answer 1

First, start by setting up an algebraic equation:

Since 10 miles equals 8 inches on the map, then one half of the equation can say:

10 mi / 8 in

Since you are trying to figure out how many miles a 3 inch map distance equals, the expression can be:

x mi / 3 in

Putting it together:

10 mi / 8 in = x mi / 3 in

Solve for x:

x = 10 mi*3 in/8 in

x = 3.75 mi