Question

You are painting the walls and ceiling of a rectangular 20 x 30 ft room. The walls are 10 feet tall. You need two coats of paint. If a gallon of paint covers 400 square feet and cost $53 per gallon, how much will you spend on painting this room?

Answer 1

The cost for painting will be $212.

Explanation:

I am painting the walls and ceiling of a rectangular 20 x 30 ft room. The walls are 10 feet tall.

So, the total area to be painted = {2 × (20 + 30) × 10} + (20 × 30) = 1600 sq. ft.

Now, a gallon of paint covers 400 square feet and cost $53 per gallon.

So, the number of gallons of paint required will be
`(1600)/(400) = 4` gallons.

And the cost for painting will be $(4 × 53) = $212. (Answer)