SOLUTION: how much water should be mixed with 15 gallons of a 16% alcohol solution to obtain a mixture that is 12%?

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: how much water should be mixed with 15 gallons of a 16% alcohol solution to obtain a mixture that is 12%?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 845398: how much water should be mixed with 15 gallons of a 16% alcohol solution to obtain a mixture that is 12%?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
You need to know this:
http://www.algebra.com/tutors/Two-Part-Mixture-with-one-material-quantity-unknown.lesson?content_action=show_dev

The needed equation to solve for volume(?) of water v, is
15%2A16%2F%28v%2B15%29=12