Question

On a map, 1/2 inch represents 15 miles. if the distance between dover and portland is 50 miles, what is the distance, in inches, between the two cities on the map?

Answer 1

(1/2) / 15 = x / 50......1/2 in. to 15 miles = x inches to 50 miles
cross multiply because this is a proportion
(15)(x) = (50)(1/2)
15x = 25
x = 25/15
x = 5/3 or 1 2/3 inches <==