Question

Mr. Ross is painting a wall that has an area of 142.5 square feet. He uses 3/4 gallon of paint to paint 1/5 of the wall. How many gallons of paint will he need to paint the entire wall?

Answer 1

Answer: He will need
`3\frac34` gallons of paint to paint the entire wall.

Explanation:

Given : Area to paint = 142.5 square feet

Paint used to paint
`\frac15` of the wall =
`\frac34` gallon

Paint used to paint complete 1 wall =
`5*\frac34` gallons

Paint used to paint complete 1 wall
`=(15)/(4)=3(3)/(4)` gallons

Hence, he will need
`3\frac34` gallons of paint to paint the entire wall.