The court alchemist needs to prepare a 20 ounces of a 12% hemlock solution to give to the young prince to help control his spasms. All the alchemist has to work with is several gallons of a weak solution which is 3% hemlock that the alchemist's foolish apprentice prepared and a small amount of a very potent 30% solution which was prepared to deal with enemies of the King. How much of each of his existing solutions should the alchemist mix to get the necessary solution for the young prince? 2.

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