SOLUTION: Sue has a big old wooden box without a top. The bottom of the box is 58 feet by 23 feet. The height of the box is 7 feet. Sue wants to put three coats of stain on the outside verti

Question 998578: Sue has a big old wooden box without a top. The bottom of the box is 58 feet by 23 feet. The height of the box is 7 feet. Sue wants to put three coats of stain on the outside vertical walls of the box. The stain comes in 1 gallon containers and costs $10.87 per gallon. Sue must buy whole gallons of stain. Each gallon of stain covers 50 square feet of area. How many gallons of stain will Sue need to purchase?

Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Square Feet to cover: .

The usage rate means that number of gallon cans, ; BUT three coats of stain wanted, so 42 cans of stain.
Answer by MathTherapy(10552) (Show Source): You can put this solution on YOUR website!

Sue has a big old wooden box without a top. The bottom of the box is 58 feet by 23 feet. The height of the box is 7 feet. Sue wants to put three coats of stain on the outside vertical walls of the box. The stain comes in 1 gallon containers and costs $10.87 per gallon. Sue must buy whole gallons of stain. Each gallon of stain covers 50 square feet of area. How many gallons of stain will Sue need to purchase?

Surface area to cover: 1,134 sq ft
3 coats: 3(1,134), or 3,402 sq ft
At 50 sq ft per can, , or 68.04, or cans are needed
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