document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=319636>Question 319636</A>: <I><SPAN STYLE=\"word-break: break-all;\">  a son is half as old as his father.12 years  ago the son was one third as old as his father. how is each now? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #228905 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=228905\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let s = son's age<BR>\n" );
document.write( "Let f = father's age<BR>\n" );
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document.write( "Write an equation for each statement<BR>\n" );
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document.write( "\"a son is half as old as his father.\"<BR>\n" );
document.write( "s = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F2 ALIGN=MIDDLE  ALT=\"1%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" >f<BR>\n" );
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document.write( "\"12 years ago the son was one third as old as his father.\"<BR>\n" );
document.write( "s - 12 = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F3 ALIGN=MIDDLE  ALT=\"1%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" >(f - 12)<BR>\n" );
document.write( "multiply each side by 3, to get rid of the fraction<BR>\n" );
document.write( "3(s - 12) = f - 12<BR>\n" );
document.write( "3s - 36 = f - 12<BR>\n" );
document.write( "3s = f - 12 + 36<BR>\n" );
document.write( "3s = f + 24<BR>\n" );
document.write( "Replace s with <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F2 ALIGN=MIDDLE  ALT=\"1%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" >f, (from the 1st statement)<BR>\n" );
document.write( "3(<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F2 ALIGN=MIDDLE  ALT=\"1%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" >f) = f + 24<BR>\n" );
document.write( "(<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%2F2 ALIGN=MIDDLE  ALT=\"3%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" >f = f + 24<BR>\n" );
document.write( "Multiply both sides by 2 to get rid of the fraction, results:<BR>\n" );
document.write( "3f = 2(f + 24)<BR>\n" );
document.write( "3f = 2f + 48<BR>\n" );
document.write( "3f - 2f = 48<BR>\n" );
document.write( "f = 48 yrs is father's present age<BR>\n" );
document.write( "then<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F2 ALIGN=MIDDLE  ALT=\"1%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" >*48 = 24 yrs is son's present age\r<BR>\n" );
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document.write( "Check solutions in the statement<BR>\n" );
document.write( "\"12 years ago the son was one third as old as his father.\"<BR>\n" );
document.write( "24 - 12 = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F3 ALIGN=MIDDLE  ALT=\"1%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" >(48 - 12)<BR>\n" );
document.write( "12 = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F3 ALIGN=MIDDLE  ALT=\"1%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" >*36, confirms our solutions </SPAN>\n" );
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