document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=702760>Question 702760</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How much of a 70% alcohol solution and how much of a 30% alcohol solution should be mixed to make 5 liters of a 50% alcohol solution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #433134 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=433134\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How much of a 70% alcohol solution and how much of a 30% alcohol solution should be mixed to make 5 liters of a 50% alcohol solution?<BR>\n" );
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document.write( "50% is the average, so it's equal amounts.<BR>\n" );
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document.write( "The general solution:<BR>\n" );
document.write( "s = amount of 70%<BR>\n" );
document.write( "t = 30%<BR>\n" );
document.write( "----<BR>\n" );
document.write( "s + t = 5 (total solution)<BR>\n" );
document.write( "70s + 30t = 5*50 (total alcohol)<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "s = 5-t<BR>\n" );
document.write( "7s + 3t = 25<BR>\n" );
document.write( "7(5-t) + 3t = 25<BR>\n" );
document.write( "--> t = 2.5<BR>\n" );
document.write( "s = 2.5<BR>\n" );
document.write( "same answer </SPAN>\n" );
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