SOLUTION: Okay, so what about this: Nancy mixed 14mL of a salt solution with 13mL of a 38% salt solution, to make a 30% salt solution. Find the percent salt concentration of the first solu

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: Okay, so what about this: Nancy mixed 14mL of a salt solution with 13mL of a 38% salt solution, to make a 30% salt solution. Find the percent salt concentration of the first solu      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 885802: Okay, so what about this:
Nancy mixed 14mL of a salt solution with 13mL of a 38% salt solution, to make a 30% salt solution. Find the percent salt concentration of the first solution.
Is there a generic "set-up" of how to do these types of problems? I just can't figure out how to set them up.
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Nancy mixed 14mL of a salt solution with 13mL of a 38% salt solution, to make a 30% salt solution. Find the percent salt concentration of the first solution.
***
let x=percent salt concentration of the first solution
amt of salt in separate solutions=amount of salt in mixture
x%*14+38%*13=30%(14+13)
14x+4.94=8.1
14x=8.1-4.94=3.16
x=3.16/14
x≈0.2257
percent salt concentration of the first solution≈22.57%