SOLUTION: How much water must be added to 3 quarts of a 30 percent acid solution for form a 20 percent acid solution

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Question 449412: How much water must be added to 3 quarts of a 30 percent acid solution for form a 20 percent acid solution
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
3x.30=.9
.20n=.9
n=.9/.2=4.5
4.5-3=1.5
You need to add 1.5 qts. of water to get the desired solution..