SOLUTION: How many ounces of a 10% alcohol solution must be mixed with 4 ounces of a 15% alcohol solution to make a 14% alcohol solution?

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Question 740915: How many ounces of a 10% alcohol solution must be mixed with 4 ounces of a 15% alcohol solution to make a 14% alcohol solution?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
m = "ounces" of the 10% alcohol.
%2810%2Am%2B4%2A15%29%2F%28m%2B4%29=14
Solve for m.