SOLUTION: In chemistry class, Todd Corbin has 1 liter of a 20% sulfuric acid solution. How much of 12% sulfuric acid solution must he mix with the 1 liter of 20% to make a 15% sulfuric acid

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Question 432655: In chemistry class, Todd Corbin has 1 liter of a 20% sulfuric acid solution. How much of 12% sulfuric acid solution must he mix with the 1 liter of 20% to make a 15% sulfuric acid solution?
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
.20(1)+.12(x)=.15(1+x)
.20+.12x=.15+.15x
.05=.03x
.05/.03=x
1.67=x
Todd needs 1.67 liters of 20% solution for his mix..