Mathematics, 02.09.2019 07:10, stephanieboyd

Achemist needs 9 liters of a 50% salt solution. all she has is a 20% salt solution and a 70% salt solution. how many liters of the 20% solution does she need to mix with the 70% solution to get what she needs

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Achemist needs 9 liters of a 50% salt solution. all she has is a 20% salt solution and a 70% salt so...