document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=704475>Question 704475</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A chemist wants to make a 10% solution of fertilizer.  How much water and how much of a 30% solution should the chemist mix to get 30L of a 10% solution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #434094 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</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=434094\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Question is typical, typical, typical!  Rational expression equals a value.\r<BR>\n" );
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document.write( "Let x be how much water, y is how much of the 30%.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y%2A0.30%2F%28w%2By%29=0.10 ALIGN=MIDDLE  ALT=\"y%2A0.30%2F%28w%2By%29=0.10\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2By=30 ALIGN=MIDDLE  ALT=\"x%2By=30\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Solve one of the equations for x and substitute into the other equation and solve for y.  Now use either equation to solve for x value. \r<BR>\n" );
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document.write( "You'll see that I did not put any \"x\" into the numerator of the rational equation.  Do you understand why?  ( x*0=0, the water by itself has no fertilizer ). \r<BR>\n" );
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document.write( "Since you know 30 liters is the amount of mixture desired, the rational equation can be written, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y%2A0.30%2F30=0.10 ALIGN=MIDDLE  ALT=\"y%2A0.30%2F30=0.10\"   DISABLED_style= \"max-width:90%; height:auto;\" >, and in this case is simpler. </SPAN>\n" );
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