SOLUTION: Tom needs a 25% solution of alcohol. He has a 15% solution and a 30% solution. How many liters of the 15% soloution should be added to 3 liters of the 30% soloution to obtain the

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: Tom needs a 25% solution of alcohol. He has a 15% solution and a 30% solution. How many liters of the 15% soloution should be added to 3 liters of the 30% soloution to obtain the      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 96899: Tom needs a 25% solution of alcohol. He has a 15% solution and a 30% solution. How many liters of the 15% soloution should be added to 3 liters of the 30% soloution to obtain the 25% solution?

This is not from a textbook, this was a handed out assignment.
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
3(30%)+x(15%)=(3+x)(25%) ... .9+.15x=.75+.25x ... .15=.10x ... 1.5=x