document.write( "Question 755847: How many quarts of water must be added to 13qt of a 80% antifreeze solution to make a 65% antifreeze solution? \n" ); document.write( "

Algebra.Com's Answer #459860 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"+w+\"$ = quarts of water to be added
\n" ); document.write( " $\"+.8%2A13+=+10.4+\"$ = quarts of antifreeze in 80% solution
\n" ); document.write( "--------------------
\n" ); document.write( " $\"+10.4+%2F+%28+w+%2B+13+%29+=+.65+\"$
\n" ); document.write( " $\"+10.4+=+.65%2A%28+w+%2B+13+%29+\"$
\n" ); document.write( " $\"+10.4+=+.65w+%2B+8.45+\"$
\n" ); document.write( " $\"+.65w+=+1.95+\"$
\n" ); document.write( " $\"+w+=+3+\"$
\n" ); document.write( "3 quarts of water need to be added
\n" ); document.write( "check:
\n" ); document.write( " $\"+10.4+%2F+%28+w+%2B+13+%29+=+.65+\"$
\n" ); document.write( " $\"+10.4+%2F+%28+3+%2B+13+%29+=+.65+\"$
\n" ); document.write( " $\"+10.4+%2F+16+=+.65+\"$
\n" ); document.write( " $\"+10.4+=+.65%2A16+\"$
\n" ); document.write( " $\"+10.4+=+10.4+\"$
\n" ); document.write( "OK \n" ); document.write( "

\n" );