document.write( "Question 164341: A SIX LITER MIXTURE OF ALCOHOL AND WATER IS 75% ALCOHOL.HOW MUCH ALCOHOL MUST BE ADDED TO THE EXISTING MIXTURE TO PRODUCE A MIXTURE THAT IS 80% ALCOHOL?
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Algebra.Com's Answer #121085 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! 6*.75+x=.80(6+x) \n" ); document.write( "4.5+x=4.8+.8x \n" ); document.write( "x-.8x=4.8-4.5 \n" ); document.write( ".2x=.3 \n" ); document.write( "x=.3/.2 \n" ); document.write( "x=1.5 liters of pure alcohol is needed. \n" ); document.write( "Proof: \n" ); document.write( "6*.75+1.5=.8(6+1.50 \n" ); document.write( "4.5+1.5=.8*7.5 \n" ); document.write( "6=6 \n" ); document.write( " |