PRE-ALGEBRA

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Paint costs $21 per gallon is to be mixed with 6 gallons of paint thinner costing $5 per gallon to make a paint that can be $15 per gallon. Compute how much paint mixture will be produced.

  • PRE-ALGEBRA -

    Let the quantity of paint be x gallons, then
    cost of paint = $21x
    cost of thinner = 6*$5

    cost of mixture = $15*(x+6)
    therefore
    21x+6*5 = 15(x+6)

    Solve for x.

  • PRE-ALGEBRA -

    10

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