document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=830717>Question 830717</A>: <I><SPAN STYLE=\"word-break: break-all;\"> We need 15 quarts of 30% antifreeze solution. We have 20% antifreeze and 50% antifreeze to mix together to make it. How much of each should we mix together?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #500803 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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/cgi-bin/show-face.mpl?user=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=500803\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We need 15 quarts of 30% antifreeze solution. We have 20% antifreeze and 50% antifreeze to mix together to make it. How much of each should we mix together? <BR>\n" );
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document.write( "Let x = amount (quarts) of 20% <BR>\n" );
document.write( "then<BR>\n" );
document.write( "15-x = amount (quarts) of 50%<BR>\n" );
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document.write( ".20x + .50(15-x) = .30(15)<BR>\n" );
document.write( ".20x + 7.5-.50x = 4.5<BR>\n" );
document.write( "7.5-.30x = 4.5<BR>\n" );
document.write( "-.30x = -3<BR>\n" );
document.write( "x = 10 quarts (20%)<BR>\n" );
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document.write( "Amount of 50%:<BR>\n" );
document.write( "15-x = 15-10 = 5 quarts<BR>\n" );
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