document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=177629>Question 177629</A>: <I><SPAN STYLE=\"word-break: break-all;\"> To strengthen a mixture of 10% alcohol to 30% alcohol, how much pur alcohol must be added to 7 L of the 10% solution? Can you how me step by step </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #132659 by </B><A HREF=/tutors/aboutme.mpl?userid=Mathtut><B>Mathtut(3670)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Mathtut><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=132659\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let x be the amount of pure alcohol added<BR>\n" );
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document.write( "existing solution+added solution=final mixture<BR>\n" );
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document.write( ".10(7)=existing<BR>\n" );
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document.write( "x = pure alcohol added<BR>\n" );
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document.write( ".3(7+x)=final mixture(see we want to end up with 30% of what we are mixing and thats the original 7 liters plus what ever we add.<BR>\n" );
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document.write( "so putting it altogether we have<BR>\n" );
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document.write( ".10(7)+x=.3(7+x).....eq 1<BR>\n" );
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document.write( ".7+x=2.1+.3x<BR>\n" );
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document.write( ".7x=1.4<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28x=2%29 ALIGN=MIDDLE  ALT=\"highlight%28x=2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >Liters of pure alcohol </SPAN>\n" );
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