document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=780214>Question 780214</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi, I really need help with this question. I urgently need an answer to this question. I have to use algebra to solve it.<BR>\n" );
document.write( "Thanks\r<BR>\n" );
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document.write( "A man is nine times as old as his son. In nine years, he will be only three times as old as his son. How old are each now?\r<BR>\n" );
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document.write( "Please use the variables:<BR>\n" );
document.write( "F = Age of father<BR>\n" );
document.write( "S = Age of son<BR>\n" );
document.write( "Any other variables can be included if need be.<BR>\n" );
document.write( "Thanks so much! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #475487 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=475487\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+F+ ALIGN=MIDDLE  ALT=\"+F+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = Age of father<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+S+ ALIGN=MIDDLE  ALT=\"+S+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = Age of son<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+F+%2B+9+ ALIGN=MIDDLE  ALT=\"+F+%2B+9+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = father's age in 9 years<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+S+%2B+9+ ALIGN=MIDDLE  ALT=\"+S+%2B+9+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = son's age in 9 years<BR>\n" );
document.write( "----------------------<BR>\n" );
document.write( "given:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+F+=+9S+ ALIGN=MIDDLE  ALT=\"+F+=+9S+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+F+%2B+9+=+3%2A%28+S+%2B+9+%29+ ALIGN=MIDDLE  ALT=\"+F+%2B+9+=+3%2A%28+S+%2B+9+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-------------------------------<BR>\n" );
document.write( "Substitute (1) into (2)<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+9S+%2B+9+=+3%2A%28+S+%2B+9+%29+ ALIGN=MIDDLE  ALT=\"+9S+%2B+9+=+3%2A%28+S+%2B+9+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+9S+%2B+9+=+3S+%2B+27+ ALIGN=MIDDLE  ALT=\"+9S+%2B+9+=+3S+%2B+27+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+9S+-+3S+=+27+-+9+ ALIGN=MIDDLE  ALT=\"+9S+-+3S+=+27+-+9+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+6S+=+18+ ALIGN=MIDDLE  ALT=\"+6S+=+18+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+S+=+3+ ALIGN=MIDDLE  ALT=\"+S+=+3+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and, since<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+F+=+9S+ ALIGN=MIDDLE  ALT=\"+F+=+9S+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+F+=+9%2A3+ ALIGN=MIDDLE  ALT=\"+F+=+9%2A3+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+F+=+27+ ALIGN=MIDDLE  ALT=\"+F+=+27+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The father is 27 and the son is 3<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "In 9 years, father is 36 and son is 12<BR>\n" );
document.write( "father is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3%2A12+=+36+ ALIGN=MIDDLE  ALT=\"+3%2A12+=+36+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "OK\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );