document.write( "Question 1204301: How much pure acid should be mixed with 4 gallons of a 60% acid solution in order to get 80% acid​ solution? \n" ); document.write( "
Algebra.Com's Answer #840460 by Alan3354(69443)\"\" \"About 
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How much pure acid should be mixed with 4 gallons of a 60% acid solution in order to get 80% acid​ solution?
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\n" ); document.write( "Pure is 100%
\n" ); document.write( "80% is the average of 60% and 100% ---> equal amounts
\n" ); document.write( "4 gallons
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