document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=200635>Question 200635</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The printed matter on a 14 by 16 centimeter page of a book must cover 80 square centimeters. If all margins are to be the same width, how wide should they be? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #150905 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=150905\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (14-2x)(16-2x)=80<BR>\n" );
document.write( "224-32x-28x+4x62=80<BR>\n" );
document.write( "4x^2-60x+224-80=0<BR>\n" );
document.write( "4x^2-60x+144=0<BR>\n" );
document.write( "4(x^2-15x+36)=0<BR>\n" );
document.write( "4(x-12)(x-3)=0<BR>\n" );
document.write( "x-3=0<BR>\n" );
document.write( "x=3 ans. for the width of the margins.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( "(14-2*3)(16-2*3)=80<BR>\n" );
document.write( "(14-6)(16-6)=80<BR>\n" );
document.write( "8*10=80<BR>\n" );
document.write( "80=80 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );