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Mathematics, 08.06.2020 15:57 abbymoses3
How many quarts of a 50% solution of acid must be added to 20 quarts of a 20% solution of acid to obtain a mixture containing a 40% solution of acid? quarts
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How many quarts of a 50% solution of acid must be added to 20 quarts of a 20% solution of acid to ob...
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