SOLUTION: I need 90 milliliters of a 20% solution but only have 4% and 40% solutions available. how many many milliliters of each should be mixed to get my desired solution?
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Question 909956: I need 90 milliliters of a 20% solution but only have 4% and 40% solutions available. how many many milliliters of each should be mixed to get my desired solution?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
x 40% amount
.40x + .04(90ml - x) = .20(90ml)
x = .16(90ml)/.36, 40% amount
the 4% amount
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