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Identify the system of equations used to solve the following problem. A laboratory employee is mixing a 10% saline solution with 4% saline solution. How much of each solution is needed to make 500 milliliters of a 6% solution?

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susanwiederspan
I think with the kinds of mixture problems, it's really helpful to make a table.

The equations you actually need are [tex]x + y = 500[/tex] and [tex]0.1(500-y)+0.04y=30[/tex]. Since I was so close, I went ahead and just solved it anyway. You can see my setup on the attached image.
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