A map has a scale of 5 inches : 12 miles. If two cities are 13 inches apart on the map, what is the actual distance between the cities, to the nearest mile
13 in / 5/12 in/mile = 13 * 12/5 miles = ........ miles
5 / 12 = 13/ x cross-multiply
5x = 13 * 12
5x = 156 divide both sides by 5
x =156/5 = 31.2 miles = 31 miles
