SOLUTION: In a chemistry lab, you have 2 vinegars, One is 5% acetic acid and the other is 6.5% acetic acid. You want to make 200 mL of a vinegar solution that is 6% acetic acid. How many mil

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: In a chemistry lab, you have 2 vinegars, One is 5% acetic acid and the other is 6.5% acetic acid. You want to make 200 mL of a vinegar solution that is 6% acetic acid. How many mil      Log On


   

Question 1108507: In a chemistry lab, you have 2 vinegars, One is 5% acetic acid and the other is 6.5% acetic acid. You want to make 200 mL of a vinegar solution that is 6% acetic acid. How many milliliters of vinegar do you need to mix together?
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
system%285x%2B6.5y=6%2A200%2Cx%2By=200%29

5%28200-y%29%2B6.5y=6%2A200
5%2A200-5y%2B6.5y=6%2A200
1.5y=200
y=200%2F1.5
highlight%28y=133%29---------volume of the 6.5% acetic acid vinegar

highlight%28x=67%29---------of the 5% acetic acid vinegar