document.write( "Question 470282: how much alcohol in pints must be added to 80 pints of a solution of alcohol and iodine that is 20 percent iodine in order to produce a 15 percent solution of iodine \n" ); document.write( "
Algebra.Com's Answer #322586 by nerdybill(7384)\"\" \"About 
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how much alcohol in pints must be added to 80 pints of a solution of alcohol and iodine that is 20 percent iodine in order to produce a 15 percent solution of iodine
\n" ); document.write( "Let x = amount of alcohol (pints) added
\n" ); document.write( "then
\n" ); document.write( ".20(80) = .15(80+x)
\n" ); document.write( "16 = 12+.15x
\n" ); document.write( "4 = .15x
\n" ); document.write( "4/.15 = x
\n" ); document.write( "26.67 pints = x
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