The distance between the school and the airport on a map is 7.25 cm. the scale of the map is 1 cm : 12 m. what is the actual distance between the school and the airport?

This problem can be solved via a simple ratio and proportion approach. The concept is, the ratio of the actual length to the model length is constant. The solution is as follows:

Actual/Model = 12 m/ 1 cm = x/7.25 cm
Solve for x,
x = 87 m

So, the actual distance is 87 m.