SOLUTION: There is available 60 gallons of a 50% solution of glycerin and water. What volume of water must be added to the solution to reduce the glycerin concentration to 12%? All percentag

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: There is available 60 gallons of a 50% solution of glycerin and water. What volume of water must be added to the solution to reduce the glycerin concentration to 12%? All percentag      Log On


   

Question 667808: There is available 60 gallons of a 50% solution of glycerin and water. What volume of water must be added to the solution to reduce the glycerin concentration to 12%? All percentage are by volume.
please help me....
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

There is available 60 gallons of a 50% solution of glycerin and water. What volumehighlight%28x%29 of water must be added 

to the solution to reduce the glycerin concentration to 12% (88% water)  

      water = water (total gallons same on both sides)

 x + .50*60 = .88(x+60) 

      .22x = .33*60

         x = 90gal of water must be added



rstuv method

 1. Read the problem.

 2. Select the unknown.

 3. Translate into an equation: 

 4. Use the rules to solve.

 5. Verify the result