Question

Jackson is painting the side of his school. He paints a wall that has an area of 41 1/3 square yards. He uses 2 1/3 gallons of orang paint. What is Jackson's rate of paint coverage in square yards per gallon?
The label on the paint container says that the average coverage rate is 275 square feet per gallon. what is the difference in square feet per gallon between Jackson's rate of paint coverage and the average rate indicated on the container? (Note: 1 square yard = 9 square feet)

Answer 1

41 1/3 / 2 1/3

= 124 / 7 = 17.7 yards^2 / gal

17.7 * 9 = 159 ft^2/gal

275 - 159 = 116 difference

Answer 2

41 1/3 sq yds divided by 2 1/3 gallons

You need to use improper fractions

124/3 divided by 7/3

124/3 times 3/7

124/7 sq yds per gallon

which you can change to a mixed number.

To find out what Jack is getting you need to multiply the answer above by 9 since 1 sq yard = 9 square feet.

Compare that answer with the given on the can.