SOLUTION: Hhi, I was wondering if someone could help me solve this problem. I am having a very long day and the answer just isnt coming to me... Nail polish remover is essentially a mixtu

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Question 148561: Hhi, I was wondering if someone could help me solve this problem. I am having a very long day and the answer just isnt coming to me...
Nail polish remover is essentially a mixture of water and a chemical called acetone.How much pure acetone must be combined with a solution that is 40% acetone to make 30 oz of a 58% solution?
Thank you very much for your help and your time.
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
let x="oz of acetone"

(100%)x+(40%)(30-x)=(58%)(30) __ x+12-.4x=17.4 __ subtracting 12 __ .6x=5.4 __ dividing by .6 __ x=9