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Kaylee, a residential builder, is working on a paint budget for a custom designed home she is building. A gallon of paint costs $38.50, and its label says it covers about 350 square feet.

a. Explain how to calculate the cost of paint per square foot. Find this value. Show your work.

b. Kaylee measured the room she wants to paint a calculated a total area of 825 square feet. If the paint is only available in one gallon cans, how many cans of paint she she buy? Justify your answer.

Sagot :

$38.50 of paint covers 350 square feet, so for one square foot, 38.5/350=$.11 worth of paint is needed.

b.  825/350 is about 2.36, so 2.36 gallons are needed, but as we cannot buy partial gallons, we need 3 gallons of paint.
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