Show the Entire Solutions for System of Equations to Solve a Mixture Problem

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The mixture problem is one of the most popular applications of Systems of Equations. Your task this week is to find a mixture problem and demonstrate to the class, step by step, how a system of equations can be used to solve your problem of choice.

Initial post must be between 75 to 150 words, but may go longer depending on the topic. Please cite any outside sources.