The scale of the map is 1 centimeter = 15 kilometers, which we can write as the following unit rate.
15 kilometers/1 centimeter
By multiplying this unit rate by 0.2, we get the number of kilometers that corresponds to 0.2 centimeters on the map.
15 kilometers* 0.2/1 centimeter* 0.2=3 kilometers/0.2 centimeters
As we can see, the actual distance is 3 kilometers.
