SOLUTION: A druggist has an 18% solution of argyol. How much of this solution and how much water must be mixed together to make 10 liters of a 12% solution?

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Question 328236: A druggist has an 18% solution of argyol. How much of this solution and how much water must be mixed together to make 10 liters of a 12% solution?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Let X be the amount of water (0% argyol).
Let Y be the amount of 18% argyol.
1.X%2BY=10
.
.
.
0%28X%29%2B18%28Y%29=12%2810%29
18Y=120
highlight%28Y=20%2F3%29liters
Then from eq. 1,
X%2B20%2F3=30%2F3
highlight%28X=10%2F3%29liters