Jeremy is driving to a friend's house that is 72 miles away from his home. The scale on Jeremy's map is 1/2 inch is equivalent to 8 miles. How far is it on the map from Jeremy's house to his friend's house?
(1/2) / 8 = x / 72 cross-multiply
72 (1/2) = 8x
36 = 8x divide both sides by 8
36/8 = x = 9/2 = 2.25 in
