document.write( "Question 850759: A 12-qt cooling system is checked and found to be filled with 25% antifreeze. The desired strength is 50% antifreeze. How many quarts need to be drained and replaced with pure antifreeze to reach the desired strength? \n" ); document.write( "
Algebra.Com's Answer #512397 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
12/4+x=12/2
\n" ); document.write( "3+x=6\r
\n" ); document.write( "\n" ); document.write( "x=3 qts
\n" ); document.write( "
\n" );