SOLUTION: how many liters of each of a 12% iodine solution and a 30% solution must be used to produce a total mixture of 90 liters and of 22% iodine solution

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Question 671891: how many liters of each of a 12% iodine solution and a 30% solution must be used to produce a total mixture of 90 liters and of 22% iodine solution
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

how many liters of each of a 12% iodine solutionhighlight%2890-x%29 and a 30% solutionhighlight%28x%29 

must be used to produce a total mixture of 90 liters and of 22% iodine solution

 Mixing Algebraically

 .30x+%2B+.20%2890L-x%29+=+.22%2A90L

      .10x = .02•90L     || Solve for x