# SOLUTION: Dory has a solution that is 65% boric acid and a solution that is 15% boric acid. How much of each should she use to obtain 300 ml of a solution that is 35% boric acid?

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 Question 203401This question is from textbook : Dory has a solution that is 65% boric acid and a solution that is 15% boric acid. How much of each should she use to obtain 300 ml of a solution that is 35% boric acid?This question is from textbook Answer by rfer(12657)   (Show Source): You can put this solution on YOUR website!let x=65% solution let x-300=15% solution 0.65x+0.15(300-x)=0.35(300) 0.65x+45-0.15x=105 0.50x=60 x=120 ml of 65% x-300=180 ml of 15%