document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1041077>Question 1041077</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A man's age is three times the sum of the age of his two sons,  one of whom is twice as old as the other; in 12 years the sum of the son's ages will be three-fourths of their father's age. Find their respective ages. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #656014 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=656014\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\">\r\n" );
document.write( "Father's Age              y\r\n" );
document.write( "A Son's Age               b\r\n" );
document.write( "The Other Son's Age       s\r\n" );
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document.write( "Follow the written description closely and translate into equations.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28y=3%28b%2Bs%29%2Cs=2b%2C%28b%2B12%29%2B%28s%2B12%29=%283%2F4%29%28y%2B12%29%29 ALIGN=MIDDLE  ALT=\"system%28y=3%28b%2Bs%29%2Cs=2b%2C%28b%2B12%29%2B%28s%2B12%29=%283%2F4%29%28y%2B12%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Solve the system.  FORMING the system of equations is the biggest part of the solution to the given problem description.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=3%28b%2B2b%29 ALIGN=MIDDLE  ALT=\"y=3%28b%2B2b%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=9b ALIGN=MIDDLE  ALT=\"y=9b\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b%2Bs%2B24=%283%2F4%29%28y%2B12%29 ALIGN=MIDDLE  ALT=\"b%2Bs%2B24=%283%2F4%29%28y%2B12%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4b%2B4s%2B72=3y%2B36 ALIGN=MIDDLE  ALT=\"4b%2B4s%2B72=3y%2B36\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4b%2B4s%2B36=3y ALIGN=MIDDLE  ALT=\"4b%2B4s%2B36=3y\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4b%2B4%2A2b%2B36=3y ALIGN=MIDDLE  ALT=\"4b%2B4%2A2b%2B36=3y\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12b%2B36=3y ALIGN=MIDDLE  ALT=\"12b%2B36=3y\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4b%2B12=y ALIGN=MIDDLE  ALT=\"4b%2B12=y\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Simpler System,  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%284b%2B12=y%2Cy=9b%29 ALIGN=MIDDLE  ALT=\"system%284b%2B12=y%2Cy=9b%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Simple substitution for y,  OR simply equating expressions for y,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4b%2B12=9b ALIGN=MIDDLE  ALT=\"4b%2B12=9b\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12=5b ALIGN=MIDDLE  ALT=\"12=5b\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b=12%2F5=2%262%2F5 ALIGN=MIDDLE  ALT=\"b=12%2F5=2%262%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" >-----------this suggests that I made a mistake, because we usually expect Natural numbers for this kinds of age description exercises.  You can keep working with it, or recheck my steps. </SPAN>\n" );
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