Peter wants to put 2 coats of paint on both the inside and outside of the walls. There are 5 walls, each side having 45 ft2 of paintable surface. A gallon of paint covers x ft2. Explain how to write an expression to represent the number of gallons of paint Peter needs.

Question

Mathematics

Michelle

15 August, 20:30

Peter wants to put 2 coats of paint on both the inside and outside of the walls. There are 5 walls, each side having 45 ft2 of paintable surface. A gallon of paint covers x ft2. Explain how to write an expression to represent the number of gallons of paint Peter needs.

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Amara Wells · Answer 1

Both sides of one wall would be 90 square feet. 2 coats of paint for both sides would be 180 square feet. There are 5 walls, so the square feet to be painted is 5 (180) = 900

So, Peter needs 900/x gallons of paint.