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 percent

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Question 666680: 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,

60 gallons of a 50% solution of glycerin and water. 

What volume of waterhighlight%28x%29 must be added to the solution to reduce the glycerin concentration to 12%?

Note:  Common thread here is % of WATER

  1%2Ax+%2B+.50%2A60gal+=+.88%2860+%2B+x%29   

         .22x+=+.38%2A60|| Solve for x