document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=183643>Question 183643</A>: <I><SPAN STYLE=\"word-break: break-all;\"> if x is 90% of y . what percent of x is y ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #137847 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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/cgi-bin/show-face.mpl?user=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=137847\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> if x is 90% of y . what percent of x is y ?<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Since \"x is 90% of y\" is<BR>\n" );
document.write( "x = .90y (equation 1)<BR>\n" );
document.write( ".<BR>\n" );
document.write( "And, from<BR>\n" );
document.write( "\"what percent of x is y\"<BR>\n" );
document.write( "100y/x  (equation 2)<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Substitute of the definition of 'x' from equation 1 into equation 2:<BR>\n" );
document.write( "100y/x<BR>\n" );
document.write( "100y/(.90y)<BR>\n" );
document.write( "100/.90 <BR>\n" );
document.write( "111.11%<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );