document.write( "Question 285111: How many gallons of water should be added to 30 gallons of a solution that is 70% antifreeze in order to obtain a mixture that is 60% antifreeze? \n" ); document.write( "
Algebra.Com's Answer #206727 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "from the standpoint of antifreeze\r \n" ); document.write( "\n" ); document.write( ".7*30=.60*(30+x) \n" ); document.write( "2.10=1.80+.6x \n" ); document.write( ".30=.6x \n" ); document.write( "5=x \n" ); document.write( "x= 5 gallons of water\r \n" ); document.write( "\n" ); document.write( "from the standpoint of water \n" ); document.write( "(.3*30)+x=(30+x)*.4 \n" ); document.write( "9+x=12.+.4x \n" ); document.write( ".6x=3 \n" ); document.write( "multiply by 10 \n" ); document.write( "6x=30 \n" ); document.write( "x=5 gallons of water \n" ); document.write( " \n" ); document.write( " |