SOLUTION: Serena wants to make 15 fluid oz. of a 35% alcohol solution by mixing together a 90% alcohol solution and a 10% alcohol solution. How much of each solution must she use?

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Question 438856: Serena wants to make 15 fluid oz. of a 35% alcohol solution by mixing together a 90% alcohol solution and a 10% alcohol solution. How much of each solution must she use?
Answer by rwm(914) About Me  (Show Source):
You can put this solution on YOUR website!
x+y=15
.9x+.1y=15*.35
What a waste of 90% alcohol!