Linda is repainting her bedroom. The wall area is 600 sq. ft. If a gallon of paint can cover 400 sq. ft., how many gallon cans of paint will Linda have to buy if she wants to do two coats?
Linda wants to do two coats, so the total area she will be painting is 2 coats * 600 sq. ft./coat = <<2*600=1200>>1200 sq. ft.
A gallon of paint will cover 400 sq. ft., so Linda will need 1200 sq. ft. / 400 sq. ft. per can = <<1200/400=3>>3 cans of paint
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