Mathematics, 11.03.2021 23:40, sanakhalid9728

How many ounces of 20% hydrochloric acid solution and 70% hydrochloric acid solution must be nixed to obtain 60 ounces of 50% hydrochloric acid solution?

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How many ounces of 20% hydrochloric acid solution and 70% hydrochloric acid solution must be nixed t...