SOLUTION: One thousand liters of a solution was available, but the solution was 90% alcohol. Jim needed a solution which was 80%percent alcohol. How many liters of alcohol had to be extrac

Algebra ->  Formulas -> SOLUTION: One thousand liters of a solution was available, but the solution was 90% alcohol. Jim needed a solution which was 80%percent alcohol. How many liters of alcohol had to be extrac      Log On


   

Question 67234This question is from textbook Advanced mathematics
: One thousand liters of a solution was available, but the solution was 90% alcohol. Jim needed a solution which was 80%percent alcohol. How many liters of alcohol had to be extracted so that the solution would be 80% alcohol? This question is from textbook Advanced mathematics

Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
(1000(90%) - x(100%))/(1000 - x) = 80%
1000(0.9) - x(1.0) = (1000 - x)(0.8)
900 - x = 800 - 0.8x
100 = 0.2x
500 = x
500 liters of pure alcohol had to be taken out.