document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=170817>Question 170817</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A father is 4 times older as old as his daughter. In 20 years he will be only twice as old as his daughter. How old are the father and daughter now? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #126115 by </B><A HREF=/tutors/aboutme.mpl?userid=Mathtut><B>Mathtut(3670)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Mathtut><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=126115\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> call fathers age f and daughters age d<BR>\n" );
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document.write( "f=4d....eq 1<BR>\n" );
document.write( "f+20=2(d+20)..eq 2<BR>\n" );
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document.write( "take f's value from eq 1 and plug it into eq 2 and distribute the right side of eq 2\r<BR>\n" );
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document.write( "4d+20=2d+40<BR>\n" );
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document.write( "2d=20<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28d=10%29 ALIGN=MIDDLE  ALT=\"highlight%28d=10%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >daughters age<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28f=4%2810%29=40%29 ALIGN=MIDDLE  ALT=\"highlight%28f=4%2810%29=40%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >fathers age </SPAN>\n" );
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