document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=723331>Question 723331</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A car radiator is filled with 4 gal of a 30% antifreeze solution. How much pure antifreeze must be added to have a 75% 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 #443131 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=443131\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A car radiator is filled with 4 gal of a 30% antifreeze solution. How much pure antifreeze must be added to have a 75% antifreeze solution?<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "anti + anti = anti<BR>\n" );
document.write( "0.30*4 + 1.00*x = 0.75(4+x)<BR>\n" );
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document.write( "Multiply thru by 100 to get:<BR>\n" );
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document.write( "30*4 + 100x = 75*4 + 75x<BR>\n" );
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document.write( "25x = 45*4<BR>\n" );
document.write( "x = (9/5)4<BR>\n" );
document.write( "x = 36/5<BR>\n" );
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document.write( "x = 7 1/5 gallons (amt. of pure antifreeze to add)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "============ </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );