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Mathematics, 02.09.2020 17:01 lyoung17
A researcher needs 60 L of 50% concentrate solution for a certain experiment, but she has only 30% solution and 70% solution. How many liters of the 30% and the 70% solutions should she mix to get what she needs?
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A researcher needs 60 L of 50% concentrate solution for a certain experiment, but she has only 30% s...
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