Question 671891
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
how many liters of each of a 12% iodine solution{{{highlight(90-x)}}} and a 30% solution{{{highlight(x)}}} 
must be used <u>to produce</u> a total mixture of 90 liters and of 22% iodine solution
 Mixing Algebraically
 {{{.30x + .20(90L-x) = .22*90L}}}
      .10x = .02•90L     || Solve for x