SOLUTION: How much pure acid should be mixed with 2 gallons of a 40% acid solution in order to get a 70% acid solution?

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: How much pure acid should be mixed with 2 gallons of a 40% acid solution in order to get a 70% acid solution?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 41832This question is from textbook
: How much pure acid should be mixed with 2 gallons of a 40% acid solution in order to get a 70% acid solution? This question is from textbook

Answer by Paul(988) About Me  (Show Source):
You can put this solution on YOUR website!
2(0.4)+x=0.7(2+x)
0.8+x=1.4+.7x
-0.6=-0.3x
x=2
Hence, about 2 more gallons is needed to be added.