For example, Rock is making a map of part of Alabama, using a scale of 2 inches = 7 miles. The two cities are 49 miles apart. To find the distance between those two cities on Rock's map, students need to convert 7 miles in this equation 2 inches = 7 miles to 49 miles. Multiplying 7 on both sides the equation becomes 14 inches = 49 miles. Therefore, the two cities are 14 inches apart on Rock's map.