document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=421277>Question 421277</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In the year 1981 there were 13 students per teacher in our universities. In ten<BR>\n" );
document.write( "years the number of students had increased 37.3% and the number of teachers 20.6%.<BR>\n" );
document.write( "How many students were there per teacher in the year 1991?\r<BR>\n" );
document.write( "\n" );
document.write( "ITRIED THIS AND FOUND (13*1.373)/1.206 = 15 student per teacher ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #294199 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=294199\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x ALIGN=MIDDLE  ALT=\"x\"   DISABLED_style= \"max-width:90%; height:auto;\" > = number of students in 1981<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y ALIGN=MIDDLE  ALT=\"y\"   DISABLED_style= \"max-width:90%; height:auto;\" > = number of teachers in 1981<BR>\n" );
document.write( "---------<BR>\n" );
document.write( "given:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2Fy+=+13%2F1%7D%7D%0D%0A-----------%0D%0A%7B%7B%7B+x+=+13y+ ALIGN=MIDDLE  ALT=\"x%2Fy+=+13%2F1%7D%7D%0D%0A-----------%0D%0A%7B%7B%7B+x+=+13y+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "In 1991:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28x+%2B+.373x%29+%2F+%28y+%2B+.206y%29+ ALIGN=MIDDLE  ALT=\"+%28x+%2B+.373x%29+%2F+%28y+%2B+.206y%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+1.373%2A13y%29+%2F+%28+1.206y+%29+ ALIGN=MIDDLE  ALT=\"+%28+1.373%2A13y%29+%2F+%28+1.206y+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+17.849y+%2F+%281.206y%29+ ALIGN=MIDDLE  ALT=\"+17.849y+%2F+%281.206y%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+17.849%2F1.206+=+14.8+ ALIGN=MIDDLE  ALT=\"+17.849%2F1.206+=+14.8+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "15/1 student/teacher ratio<BR>\n" );
document.write( "right you are! </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );