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Mathematics, 23.07.2019 20:50 bNicholson23

Ascientist wants to create 120 ml of a solution that is 30% acidic. to create this solution, she has access to a 20% solution and a 45% solution. how many millimeters of each solution should she combine to create the 30% solution? solve this problem using a system of two equations in two variables.

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