Question

Watson, Raimey

8 x 40
A gallon can of stain covers approximately 70 square feet of wooden deck. Joaquin has purchased 8 gallons of stain.
Select all deck sizes that Joaquin could fully cover if he must apply 2 coats to the deck.
10 x 18
13 x 22
14 x 20
17 x 17

Answer 1

Answer: A gallon of stain covers 70 square feet, so 8 gallons would cover 8 x 70 = 560 square feet. If Joaquin must apply 2 coats to the deck, he needs enough stain to cover the deck twice, so he needs 560 square feet x 2 = 1120 square feet.

Of the deck sizes listed, the largest one that Joaquin can fully cover with 2 coats of stain is 14 x 20 = 280 square feet, which is less than 1120 square feet. This means that Joaquin can fully cover all of the listed deck sizes if he must apply 2 coats of stain.

Explanation: