document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=422580>Question 422580</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A mechanic needs a radiator to have a 40% antifreeze solution.  The radiator currently is filled with 4 gallons of a 25% antrifreeze solution.  How much of the antifreeze mixture should be drained from the car if the mechanic replaces it with pure antifreeze?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #295097 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=295097\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A mechanic needs a radiator to have a 40% antifreeze solution. The radiator currently is filled with 4 gallons of a 25% antrifreeze solution. How much of the antifreeze mixture should be drained from the car if the mechanic replaces it with pure antifreeze?\r<BR>\n" );
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document.write( "let x=gallons of current mixture to be drained and replaced with pure antifreeze.<BR>\n" );
document.write( "4-x=gallons of current mixture remaining in the car.<BR>\n" );
document.write( ".25(4-x)+1.00x=.40*4<BR>\n" );
document.write( "1-.25x+x=1.6<BR>\n" );
document.write( ".75x=.6<BR>\n" );
document.write( "x=.6/.75=0.8 gal<BR>\n" );
document.write( "ans:<BR>\n" );
document.write( "0.8 gallons of current mixture to be drained and replaced with pure antifreeze.  </SPAN>\n" );
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