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4.) A pharmacist has to fill a prescription calling for 5 ounces of a 12% argyrol solution. She has 5 ounces of a 15% solution and 5 ounces of a 5% solution. If she starts with the 5 ounces of 15%, how much must she draw off and replace with 5% in order to fill the prescription?
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4.) A pharmacist has to fill a prescription calling for 5 ounces of a 12% argyrol solution. She has...
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