SOLUTION: A tank with a radius of 6 feet contains 1 foot of 5% acid solution. In order to mix an 8% solution, a 20% solution is added. How much 20% solution will be added? (Find ft3, gallons

Question 849548: A tank with a radius of 6 feet contains 1 foot of 5% acid solution. In order to mix an 8% solution, a 20% solution is added. How much 20% solution will be added? (Find ft3, gallons, and level change in tank). Please Help me find an easy way to understand how to do these...
Answer by josgarithmetic(39659) (Show Source): You can put this solution on YOUR website!
1 cubic foot = U.S. Gallons;------------ http://en.wikipedia.org/wiki/Cubic_feet

Volume of 5% acid in the tank:

Want to add some v gallons of 20% acid to that to make 8% acid result.

gallons of the 20% acid.

You can convert that volume into cubic feet, and use and solve for y, here being the vertical increment of change for the 211.5 gallon addition of the added acid.
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