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Mathematics, 25.02.2021 18:50 krissymonae

How many liters of a 50​% acid solution must be mixed with a 30​% acid solution to get 120 L of a ​40% acid​ solution?

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How many liters of a 50​% acid solution must be mixed with a 30​% acid solution to get 120 L of a ​4...
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