Write a system of two equations in two variables to solve each problem. Mouthwash. A
Chapter 4, Problem 4.4.48(choose chapter or problem)
Write a system of two equations in two variables to solve each problem. Mouthwash. A pharmacist has a mouthwash solution that is 6% ethanol alcohol and another that is 18% ethanol alcohol. How many milliliters of each must be mixed to make 750 milliliters of a mouthwash that is 10% ethanol alcohol?
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