SOLUTION: How much water should be added to 10 liters of a 45% alcohol solution to produce a 30% solution?

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Question 793920: How much water should be added to 10 liters of a 45% alcohol solution to produce a 30% solution?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
How much water should be added to 10 liters of a 45% alcohol solution to produce a 30% solution?
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Equation:
water + water = water
0.55*10 + 1*x = 0.70(10+x)
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55*10 + 100x = 70*10 + 70x
30x = 15*10
x = 5 liters (amt. of water to add)
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Cheers,
Stan H.
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