A gallon of paint covers 400 square feet. How many square feet will 2 3/8 gallons of paint cover?

1 gal = 400 ft²

2 3/8 gal = ? ft²

to solve, use similar ratios with units gal/ft² and compare

(1) / (400) = (2 3/8) / (x)

*multiply both sides by (x) and divide both sides by (1) / (400), you get:

x = (400) * (2 3/8) / (1) = 400 * (2 3/8) = 400*2 + 400*3/8 = 800 + 150 = 950 ft²

answer is 950 ft²