Mathematics, 05.11.2019 23:31 evazquez
Mara needs to mix some 30% acid solution and some 70% alcohol solution to end up with 20 liters of 54% solution. how many liters of the 70% solution will she need? type in your numerical answer only; do not type any words or letters with your answer.
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Mara needs to mix some 30% acid solution and some 70% alcohol solution to end up with 20 liters of 5...
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