Mathematics, 03.03.2020 03:29 dannmend123

A shade of paint is made by evenly mixing m gallons of white paint, costing $12 a gallon, with n gallons of blue paint, costing $30. What is the cost, in dollars per gallon, of the resulting mixture?

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A shade of paint is made by evenly mixing m gallons of white paint, costing $12 a gallon, with n gal...