Question 631413
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Hi,
How many gallons{{{highlight(x)}}} of a 4% acid solution should be mixed with 30 gallons of a 14% acid solution to obtain a mixture that is 8% acid?
        acid  =     acid
{{{ .04x + .14*30gal = .08(30 + x)}}}  | solve for x,may 1st multiply thru by 100, if You wish