document.write( "Question 1058969: how many gallons of acid need to be addedto convert one gallon 20% acid soltion into 30% acid solution. \n" ); document.write( "
Algebra.Com's Answer #674034 by josgarithmetic(39621)\"\" \"About 
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What concentration of acid material?\r
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\n" ); document.write( "\n" ); document.write( "twopart mixture, both parts unknown\r
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\n" ); document.write( "\n" ); document.write( "twopart mixture, one part known other part unknown\r
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