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Two liters of a 30% acid solution are mixed with three liters of a 20% acid solution and five liters of a 10% acid. What percent of the mixture is acid?

 Oct 15, 2021
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Two liters of a 30% acid solution are mixed with three liters of a 20% acid solution and five liters of a 10% acid. What percent of the mixture is acid?  

 

            Liters      %       Amt Acid  

 

               2    x    30    =    0.6  

               3    x    20    =    0.6  

               5    x    10    =    0.5  

 

Totals:   10                       1.7

 

We've ended up with 10 liters of solution that contains 1.7 liters of acid.  

 

This means that the concentration of acid in the final 10 liters is 17%.  

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 Oct 15, 2021

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