document.write( "Question 384814: A 30 L solution is 80% antifreeze. How much water must be added to produce a solution that is 60% antifreeze? \n" ); document.write( "
Algebra.Com's Answer #272390 by ptaylor(2198)\"\" \"About 
You can put this solution on YOUR website!
Let x=amount of water needed
\n" ); document.write( "Now we know that the amount of pure antifreeze before the mixture takes place (0.80*30) is equal to the amount of pure antifreeze after the mixture takes place (0.60(30+x)). Sooo our equation to solve is:
\n" ); document.write( "0.80*30=0.60(30+x) simplify
\n" ); document.write( "24 =18+0.60x subtract 18 from each side
\n" ); document.write( "0.60x=6
\n" ); document.write( "x=10 L amount of water needed\r
\n" ); document.write( "\n" ); document.write( "CK
\n" ); document.write( "0.80*30=0.60*40
\n" ); document.write( "24=24\r
\n" ); document.write( "\n" ); document.write( "Hope this helps---ptaylor
\n" ); document.write( "
\n" );