Question

The walls in a room are being painted. four cans of paint will cover 480ft 2. how many cans will be needed to cover 840ft2

Answer 1

7 cans

Explanation:

The number of cans of paint is presumed to be proportional to the area, so ...

(4 cans)/(480 ft²) = (how many cans)/(840 ft²)

Multiplying by 840 ft², we get ...

(how many cans) = (4 cans)(840 ft²)/(480 ft²) = (4 cans)(7/4)

(how many cans) = 7 cans