document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=796685>Question 796685</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how many gallons of a 90% antifreeze solution must be mixed with 70 gallons of 20% antifreeze to get a mixture that is 80% antifreeze </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #481469 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=481469\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> how many gallons of a 90% antifreeze solution must be mixed with 70 gallons of 20% antifreeze to get a mixture that is 80% antifreeze<BR>\n" );
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document.write( "let x=amount of 90% solution to mix<BR>\n" );
document.write( "70-x=amount of 20% solution to mix<BR>\n" );
document.write( "..<BR>\n" );
document.write( "90%x+20%(70-x)=80%*70<BR>\n" );
document.write( ".9x+14-.2x=56<BR>\n" );
document.write( ".7x=42<BR>\n" );
document.write( "x=60<BR>\n" );
document.write( "70-x=10<BR>\n" );
document.write( "..<BR>\n" );
document.write( "amount of 90% solution to mix=60 gal<BR>\n" );
document.write( "amount of 20% solution to mix=10 gal </SPAN>\n" );
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