Asked by Pat Stout

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.
Answered by bobpursley
.80(P+3)=P+.5(3) that is
end acid=sum of acids...
solve for P
Answered by Pat
i got 4.5. Did i do that right?
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