document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=202139>Question 202139</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Margin calculation (Revenue-Expense)/Revenue = Margin or (x-y)/x=Z.  In my case, I know the desired Margin (z) and know the Expense (y).   I would like to plug in various values for (z) and have it calculate the revenue required, solve for X.\r<BR>\n" );
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document.write( "Thanks. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #152396 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=152396\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Margin calculation (Revenue-Expense)/Revenue = Margin or (x-y)/x=Z. In my case, I know the desired Margin (z) and know the Expense (y). I would like to plug in various values for (z) and have it calculate the revenue required, solve for X. <BR>\n" );
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document.write( "Multiply both sides by x to get:<BR>\n" );
document.write( "x-y = zx<BR>\n" );
document.write( "Get the x-terms on one side:<BR>\n" );
document.write( "x-zx = y<BR>\n" );
document.write( "Factor out the \"x\":<BR>\n" );
document.write( "x(1-z) = y<BR>\n" );
document.write( "Solve for \"x\":<BR>\n" );
document.write( "x = y/(1-z)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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