document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=516393>Question 516393</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 500gallon heating tank at 20% ethanol. You need it to be a 40% ethanol solution. You can only add 100% ethanol. How the 'blank'  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #344357 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=344357\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 500gallon heating tank at 20% ethanol. You need it to be a 40% ethanol solution. You can only add 100% ethanol.----<BR>\n" );
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document.write( "Equation: <BR>\n" );
document.write( "eth + eth = eth<BR>\n" );
document.write( "0.20*500 + 1.00x = 0.40(500+x)<BR>\n" );
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document.write( "Multiply thru by 100 to get:<BR>\n" );
document.write( "20*500 + 100x = 40*500 + 40x<BR>\n" );
document.write( "60x = 20*500<BR>\n" );
document.write( "x = (1/3)500<BR>\n" );
document.write( "x = 166 2/3 gallong (amt. of 100% ethonol to be added)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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