document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=701981>Question 701981</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How man milliliters of 100% acid must be added to 50 milliliters of a 40% acid solution to obtain a 50% acid solution? \r<BR>\n" );
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document.write( "I had set up and figured the problem like this:\r<BR>\n" );
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document.write( "1(x)+.4(50)=.5(50+x)<BR>\n" );
document.write( "20x=25+.5x<BR>\n" );
document.write( "19.25x=25<BR>\n" );
document.write( "x=50/39 mL\r<BR>\n" );
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document.write( "But I have a gut feeling that x does not equal 50/39.<BR>\n" );
document.write( "What did I do wrong? <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 #432679 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39620)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=432679\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How much pure acid will be in the solution?  Letting x equal how much of the 100% material to add, <BR>\n" );
document.write( "Pure acid in the resulting solution is 1*x+50*(0.40).\r<BR>\n" );
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document.write( "How much solution must result when the two parts are added and mixed?<BR>\n" );
document.write( "The amount of resulting solution is x+50 milliliters.\r<BR>\n" );
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document.write( "You want a result of 50% acid, or as fraction, 0.5 as acid.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%2A1%2B50%2A%280.04%29%29%2F%28x%2B50%29=0.50 ALIGN=MIDDLE  ALT=\"%28x%2A1%2B50%2A%280.04%29%29%2F%28x%2B50%29=0.50\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Solve for x.\r<BR>\n" );
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document.write( "Skipping a step,...<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2B20=0.5%2Ax%2B25 ALIGN=MIDDLE  ALT=\"x%2B20=0.5%2Ax%2B25\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Continue....Finish... </SPAN>\n" );
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