A painter uses 1.2 liters of the paint to cover 1m2 of the wall. How many square meters he can cover with (1)12 liters; (2)6.6 liters; (3)4.8 liters of paint?

  To solve this problem, all we need is to do ratio and proportion. We know that for every 1.2 Liters, we can cover 1 m^2 of wall. Hence the ratio is: ratio factor = 1 m^2 / 1.2 Liters   (1) for 12 Liters of paint, the area is: area = 12 Liters * (1 m^2 / 1.2 Liters) = 10 m^2   (2) for 6.6 Liters of paint, the area is: area = 6.6 Liters * (1 m^2 / 1.2 Liters) = 5.5 m^2   (3) for 4.8 Liters of paint, the area is: area = 4.8 Liters * (1 m^2 / 1.2 Liters) = 4 m^2