Question

the ratio of the gallons of paint needed to the area covered in square feet is 3 to 1275. Use a proportion to predict how much area can be covered with 7 gallons of paint

Answer 1

`(3gallons)/(1275ft^2)=(7gallon)/(xft^2)\\\\ cross\ multiplication:\\ 3x=1275*7\\ 3x=8925 \ \ | divide\ by\ 3\\ x=2975\\\\ 2975ft^2\ can\ be\ covered\ using \ 7\ gallons\ of\ paint.`