Question

the legend of a map says that .5 inches is equal to 10 miles on a map. if a highway on a map is 1.75 inches long, how long is the actual hughway

Answer 1

Do a ratio.

Answer 2

Since we're using the same map for both measurements, the ratio of inches to miles will be the same for both quantities. So we can set it up as a ratio and compare.
\[\frac{ .5inches }{ 10miles }=\frac{ 1.75inches }{ x miles }\]

Answer 3

.5/10 = 1.75/X