One litre of paint can be used to paint [[$ 5.0 $]] m[[$^2$]] of wall.

a) How much paint is needed for painting a wall if its area is [[$ 15.0 $]] m[[$ ^2 $]]?



Answer: litres of paint are needed.

b) How much paint is needed for painting a wall if its area is [[$ 63.0 $]] m[[$ ^2 $]]?



Answer: litres of paint are needed.

c) How much paint is needed for painting a wall if its area is [[$ 113.0 $]] m[[$ ^2 $]]?



Answer: litres of paint are needed.