document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=990780>Question 990780</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A mother is four times as old as his son. In 6 years, she will be three as old as he is. How old is the son now? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #610831 by </B><A HREF=/tutors/aboutme.mpl?userid=macston><B>macston(5194)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=macston><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=macston><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=610831\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "M=mother's age; S=son's age<BR>\n" );
document.write( ".<BR>\n" );
document.write( "M=4S Use this to substitute for M.<BR>\n" );
document.write( ".<BR>\n" );
document.write( "M+6=3(S+6) Substitute for M from above.<BR>\n" );
document.write( "4S+6=3S+18<BR>\n" );
document.write( "S=12<BR>\n" );
document.write( ".<BR>\n" );
document.write( "ANSWER: The son is 12 years old.<BR>\n" );
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document.write( "CHECK:<BR>\n" );
document.write( "M=4(S)=4(12)=48yrs<BR>\n" );
document.write( "Mother is 48 years old.<BR>\n" );
document.write( "M+6=3(S+6)<BR>\n" );
document.write( "48+6=3(12+6)<BR>\n" );
document.write( "54=3(18)<BR>\n" );
document.write( "54=54\r<BR>\n" );
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document.write( " </SPAN>\n" );
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