To determine the area that can be covered with 15 gallons of paint, knowing that 3 gallos can be used to paint 675ft², first determine the area that can be covered per gallon.
To do so, divide 675 by 3
![(675)/(3)=225](https://img.qammunity.org/2023/formulas/mathematics/college/baquoi75f5q6bnw4tlw1f3bl97adlg4q3p.png)
Each gallon of paint covers an area of 225ft²
Next multiply the area per gallon by 15 to determine how much will 15 gallons of paint cover
![225\cdot15=3375](https://img.qammunity.org/2023/formulas/mathematics/college/huemq6z9j42dzee3pmuorhb5om89ttwfic.png)
With 15 gallons of paint you'll be able to cover an area of 3375ft²