document.write( "Question 1085259: The radiator truck contains 12 gallons of water. We draw off 3 gallons and replace it with alcohol, then draw off 3 gallons of the mixture and replace it by alcohol, etc., how much alcohol is in the dinal mixture? \n" ); document.write( "
Algebra.Com's Answer #699352 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! The radiator truck contains 12 gallons of water. \n" ); document.write( " We draw off 3 gallons and replace it with alcohol, \n" ); document.write( "Find the percent alcohol in decimal form, when this is done \n" ); document.write( " \n" ); document.write( " then draw off 3 gallons of the mixture and replace it by alcohol, etc., how much alcohol is in the final mixture? \n" ); document.write( "let x = the percent of alcohol in the final mixture \n" ); document.write( ".25(12-3) + 3 = 12x \n" ); document.write( ".25(9) + 3 = 12x \n" ); document.write( "2.25 + 3 = 12x \n" ); document.write( "5.25 = 12x \n" ); document.write( "x = 5.25/12 \n" ); document.write( "x = .4375 * 100 = 43.75% alcohol in the final mixture \n" ); document.write( " |