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Mathematics, 13.01.2020 08:31 amazinga

Brine is a solution of salt and water. if a tub contains 70 pounds of a 5% solution of brine, how much water (to the nearest tenth lb.) must evaporate to change it to an 7.5% solution?

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Brine is a solution of salt and water. if a tub contains 70 pounds of a 5% solution of brine, how mu...

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