document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=981813>Question 981813</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The variable Z is directly proportional to X, and inversely proportional to Y.  When X is 12 and Y is 4, Z has the value 57.\r<BR>\n" );
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document.write( "What is the value of Z when X = 18, and Y = 10\r<BR>\n" );
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document.write( "This is what I've tried<BR>\n" );
document.write( "z=kx/y<BR>\n" );
document.write( "57=k*12/4=3k<BR>\n" );
document.write( "k=171<BR>\n" );
document.write( "z=171*18/10<BR>\n" );
document.write( "z=307.8  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #602740 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39628)</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=602740\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Your first sentence:  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=Z=kX%2FY ALIGN=MIDDLE  ALT=\"Z=kX%2FY\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Find a formula for k.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k=ZY%2FX ALIGN=MIDDLE  ALT=\"k=ZY%2FX\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Your second sentence indicates:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k=57%2A4%2F12 ALIGN=MIDDLE  ALT=\"k=57%2A4%2F12\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k=57%281%2F3%29 ALIGN=MIDDLE  ALT=\"k=57%281%2F3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k=19 ALIGN=MIDDLE  ALT=\"k=19\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The formula for Z is this:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28Z=19Y%2FX%29 ALIGN=MIDDLE  ALT=\"highlight%28Z=19Y%2FX%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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