document.write( "Question 246553: can this be done with one variable
\n" );
document.write( "how many gallons each of 25% alcohol and 35% alcohol should be mixed to obtain 20 gallons of 32% alcohol \r
\n" );
document.write( "\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #180003 by richwmiller(17219) You can put this solution on YOUR website! I don't see how since we are talking about two different mixtures of alcohol. \n" ); document.write( "25% alcohol is x gallons and 35% alcohol is y gallons \n" ); document.write( "x+y=20 \n" ); document.write( "x=20-y \n" ); document.write( "y=20-x\r \n" ); document.write( "\n" ); document.write( ".25x+.35*y=.32*20 \n" ); document.write( "We have two variables and two equations. \n" ); document.write( "Substitute EITHER x (x=20-y) or y (y=20-x) in the mixture formula.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |