SOLUTION: How many liters of a 20% acid solution must be added to 5 liters of a 30% acid solution to make a mixture that is 22% acid?

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Question 807374: How many liters of a 20% acid solution must be added to 5 liters of a 30% acid solution to make a mixture that is 22% acid?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
.2x+.3*5=.22(5+x)
x=20