The scale is 1 inches = 80 miles, which we can write as the following unit rate.
80 miles/1 inchesWe know that the actual distance between two cities is 350 miles, and we want to calculate how far apart will they be on the map. To do this let's make a proportion.
80 miles/1 inches=350 miles/? inches
We can write the distance on the map as x and solve the proportion.
