# math

How much pure acid should be mixed with 3 gallons of a 50% acid solution in order to get an
80% acid solution?

The %'s always throw me off.

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asked by Pat Stout
1. .80(P+3)=P+.5(3) that is
end acid=sum of acids...
solve for P

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2. i got 4.5. Did i do that right?

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posted by Pat

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