SOLUTION: How many ounces of a 40% alcohol solution should be mixed with 58 oz of a 70% alcohol solution to produce a 60% alcohol solution?

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Question 920678: How many ounces of a 40% alcohol solution should be mixed with 58 oz of a 70% alcohol solution to produce a 60% alcohol solution?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+.7%2A58+ = oz of alcohol in 70% solution
Let x+ = oz of 40% solution needed
.4x+ = oz of alcohol in 40% solution
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+%28+.7%2A58++%2B+.4x+%29+%2F+%28+58+%2B+x+%29+=+.6+
+.7%2A58+%2B+.4x=+.6%2A%28+58+%2B+x+%29+
Solve for +x+