SOLUTION: A pharmacist has 20 liters of a 5% drug solution. How many Liters of 10% solution must be added to get a mixture that is 8%?

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Question 1122747: A pharmacist has 20 liters of a 5% drug solution. How many Liters of 10% solution must be added to get a mixture that is 8%?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Add x liters of the 10% solution.

20%2A5%2B10x=8%2A%28x%2B20%29
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