Posted by **anonymous** on Friday, June 8, 2007 at 7:41pm.

moonshine has 50 liters of a 70% alcohol solution.how many liters of pure alcohol must be added to obtain an 80% alcohol solution?

The alcohol content is .7*50=35 liters.

Then, adding alcohol...

35+V=.80*(50+V)

solve for V, volume alcohol added

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