SOLUTION: How many grams of pure acid must be added to 60 grams of an 8% acid solution to make a 20% acid solution?

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: How many grams of pure acid must be added to 60 grams of an 8% acid solution to make a 20% acid solution?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 343843: How many grams of pure acid must be added to 60 grams of an 8% acid solution to make a 20% acid solution?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!

Let A be the amount of 100% acid.
100A%2B8%2860%29=20%28A%2B60%29
100A%2B480=20A%2B1200
80A=720
highlight%28A=9%29grams