Algebra-1

To solve this problem, we need to determine the total area of the 3 rooms and then calculate the total gallons required.

Find the total area of the 3 rooms:

Each room is 300 square feet, so the total area for 3 rooms is:

Calculate the total gallons of paint needed

Given: The painter uses 10 gallons to cover 500 square feet.

To find out how many many gallons () are needed to cover 900 square feet, we can set up the proportion:

Click "Show Answer" to reveal the answer and analysis