SOLUTION: how much water do you have to mix with 6 pints of 70% solution to produce a solution that is 23%?

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Question 713440: how much water do you have to mix with 6 pints of 70% solution to produce a solution that is 23%?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
how much water do you have to mix with 6 pints of 70% solution to produce a solution that is 23%?
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Equation:
water + water = water
0.30*6 + 1*x = 0.77(6+x)
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30*6 + 100x = 77*6 + 77x
23x = 47*6
x = 12.26 pints (amt. of water to add)
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Cheers,
Stan H.