Medicine, 06.04.2020 01:03 amanda289

How much of a 30% solution do you need to add to 280 ml of water to obtain a 4% solution? Need to set up 2 equations with two variables each to find x and y
The hints given are:
x=the amount of ml's needed to be added to the 280 mls and
y= the amount of the 30% solution that is contained in the amount added to the 280 mls

Answers: 1

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How much of a 30% solution do you need to add to 280 ml of water to obtain a 4% solution? Need to se...