Question

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

Answer 1

Given:

-> Area of the wall: 500sq. feet

-> 1 gallon of paint covers 160sq. feet of area

-> By unitary method:

-> 1 ft. square of wall requires 1/160 gallon of paint

Thus,

-> 500 ft. square of wall will require = 500 x 1/160 gallons of paint

= 3.0125 gallons

Hope it helps :)

Though my answer may be wrong :(

Have a great day!