Acid Mixture A chemist needs 12 gallons of a 20% acid solution. The solution is to be
Chapter 7, Problem 64(choose chapter or problem)
Acid Mixture A chemist needs 12 gallons of a 20% acid solution. The solution is to be mixed from three solutions whose concentrations are 10%, 15%, and 25%. How many gallons of each solution will satisfy each condition? (a) Use 4 gallons of the 25% solution. (b) Use as little as possible of the 25% solution. (c) Use as much as possible of the 25% solution.
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