SOLUTION: How many liters of pure acid must be mixed with 20 liters of a 15% acid solution to get a 20% mixture?
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Question 345458: How many liters of pure acid must be mixed with 20 liters of a 15% acid solution to get a 20% mixture?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = liters of pure acid needed
In words:
(total liters of acid)/(total liters of solution) = 20%
given:
acid already in solution: liters
-------------
liters
1.25 liters of acid are needed
check:
OK
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