SOLUTION: Anas teacher has asked her too add acid to 8 gallons of a 32% acid in water solution to get a solution which is 69 and 7/9 ( sixty nine and seventh ninths percent) acid. How much p

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Question 305287: Anas teacher has asked her too add acid to 8 gallons of a 32% acid in water solution to get a solution which is 69 and 7/9 ( sixty nine and seventh ninths percent) acid. How much pure acid should she add
Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!
Let A be the number of gallons of 100% acid that gets added.

Write the concentration equation for the mixture,

Multiply both side by 9.



Add 10 gallons of 100% acid.

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