Mathematics, 02.08.2019 15:30 24nelsoaddh

Marie mixes 20 liters of 12% acid solution with a 36% acid solution to make a 20% acid solution. how many liters of 36% solution did she use?

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Marie mixes 20 liters of 12% acid solution with a 36% acid solution to make a 20% acid solution. how...

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