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If you are presented with a word problem involving multiple solutions that are a certain percent of some element, chances are, you're working with a "percentmixture" problem. One trick for solving these types of equations is to set up a system where your first equation represents amount only, and the second equation represents (amount)( percent) + (amount)(percent) = (amount of mix)(percent of mix).
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Applied Linear Equations: Mixture Problem
Problem 1 3,191 viewsA nut farmer mixes some peanuts that sell for $2.50/lb with almonds that sell for $5/lb to make a 12pound mixture worth $3/lb.
How many pounds of peanuts were in the mixture? 
Applied Linear Equations: Mixture Problem
Problem 2 151 views
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