document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=753985>Question 753985</A>: <I><SPAN STYLE=\"word-break: break-all;\"> http://media.education2020.com/EVresources/2004-02-04-05-00_files/i0130000.jpg\r<BR>\n" );
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document.write( "The question is \"find the value of each variable\" </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #458707 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=458707\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Assuming the 3 lines with the red arrows are parallel:<BR>\n" );
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document.write( "That gives 3 similar triangles.<BR>\n" );
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document.write( "b/10 = 12.5/(15+10)<BR>\n" );
document.write( "b = 5<BR>\n" );
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document.write( "a/(5+15+10) = b/10 = 5/10<BR>\n" );
document.write( "a = 15<BR>\n" );
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document.write( "(12+c)/12.5 = c/b = c/5<BR>\n" );
document.write( "12.5c = 5(12+c) = 5c + 60<BR>\n" );
document.write( "c = 8<BR>\n" );
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document.write( "(d+12+c)/a = c/b<BR>\n" );
document.write( "(d+20)/15 = 8/5<BR>\n" );
document.write( "5d + 100 = 120<BR>\n" );
document.write( "d = 4<BR>\n" );
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document.write( "There are other ways to do it. </SPAN>\n" );
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