SOLUTION: How many liters each of a 15% acid solution and a 60% acid solution must be used to produce 90 liters of a 45% acid solution?

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: How many liters each of a 15% acid solution and a 60% acid solution must be used to produce 90 liters of a 45% acid solution?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 1023424: How many liters each of a 15% acid solution and a 60% acid solution must be used to produce 90 liters of a 45% acid solution?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
system%28%2815x%2B60y%29%2F90=45%2Cx%2By=45%29

system%28%283x%2B12y%29%2F90=9%2Cy=45-x%29

system%283x%2B12y=90%2A9%2Cy=45-x%29

system%28x%2B4y=270%2Cy=45-x%29

x%2B4%2845-x%29=270 and then you continue......