Question

The wall is 500 sq. feet. A gallon of paint covers 160 sq. feet. What is an appropriate conversion factor to help determine how many gallons will be needed to paint the wall?

Answer 1

Answer:

Explanation:

Given

Wall is $500 ft^2$ in area

$160\ ft^2$ requires 1 gallon of paint

so using unitary method

$1\ ft^2 requires \frac{1}{160}$   gallon of paint

$500 ft^2$ wall will require $=500\times \frac{1}{160}$ gallons of paint

$=3.0125\ gallons$