SOLUTION: Sam's favorite recipe for fruit punch requires 12 % apple juice.How much pure apple juice should he add to 2 gallons of punch that already contains 8 % juice to meet his standards?

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Question 814863: Sam's favorite recipe for fruit punch requires 12 % apple juice.How much pure apple juice should he add to 2 gallons of punch that already contains 8 % juice to meet his standards?
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
Target is 12% apple juice.

Let g = volume in gallons of pure apple juice to add.

highlight%28%288%2A2%2B100%2Ag%29%2F%282%2Bg%29=12%29
Solve for g, which will be in GALLONS.

If you understand the equation given then you should have no trouble in solving for g. If you cannot understand how the equation shown works, then this needs then to be explained and understood first.

In any case, you might want g in fluid ounces instead of gallons.
128 FLUID OUNCES = 1 Gallon
1 cup = 8 fluid ounces