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Re: A certain solution that is 30 percent acid is obtained by mixing x [#permalink]
­Use weighted avg formula to get ratio of 20% and 60% soln mixtures.

w1/w2 = 3/1

In 10 gallons 1/4th part is 2.5. Ans B
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Re: A certain solution that is 30 percent acid is obtained by mixing x [#permalink]
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