used to cover 400 square feet. How many gallons of paint should the painter buy if he is going to paint the four walls of the room?(1 point)
To calculate the number of gallons of paint needed, we need to divide the total square footage by the coverage of one gallon of paint.
Since the painter is going to paint all four walls of the room, we need to calculate the total area of all four walls combined.
Assuming each wall is the same size, and using the given coverage of 400 square feet per gallon of paint, the total square footage of all four walls would be 4 * 400 = 1600 square feet.
Since one gallon of paint covers 400 square feet, the painter would need to buy 1600 / 400 = 4 gallons of paint.