document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=671405>Question 671405</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how many quarts of pure antifreeze must be added to 4 quarts of a 30% antifreeze solution to obtain a 60% antifreeze solution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #417400 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=417400\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  how many quarts of pure antifreeze must be added to 4 quarts of a 30% antifreeze solution to obtain a 60% antifreeze solution?<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "alcohol + alcohol = alcohol<BR>\n" );
document.write( "1.0x + 0.30*4 = 0.60(x+4)<BR>\n" );
document.write( "---------<BR>\n" );
document.write( "100x + 30*4 = 60x + 60*4<BR>\n" );
document.write( "40x = 30*4<BR>\n" );
document.write( "x = 3 quarts (amt. of pure antifreeze needed)<BR>\n" );
document.write( "=========================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );