SOLUTION: 10 Liters of a 20% acid solution are mixed with 30 Liters of a 30% acid solution. Which of the following is the concentration of acid in the final mixture?

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Question 423817: 10 Liters of a 20% acid solution are mixed with 30 Liters of a 30% acid solution. Which of the following is the concentration of acid in the final mixture?

Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
10x.2=2
30x.3=9
9+2/10+30=11/40=.275