SOLUTION: How much pure acid should be mixed with gallons of a 50% acid solution in order to get a 80% acid solution

Algebra ->  Customizable Word Problem Solvers  -> Misc -> SOLUTION: How much pure acid should be mixed with gallons of a 50% acid solution in order to get a 80% acid solution       Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 744623: How much pure acid should be mixed with gallons of a 50% acid solution in order to get a 80% acid solution
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
You omitted how many gallons of the 50% acid. Call this value g. So you have g gallons of 50% acid. You would add v gallons of the 100% acid.

%28100%2Av%2Bg%2A50%29%2F%28v%2Bg%29=80

and you want to solve for v.