document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=886167>Question 886167</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A mother is 20 years older than her son. Ten years ago she was 3 times as old as her son then. Find their present ages. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #535728 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=535728\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A mother is 20 years older than her son. Ten years ago she was 3 times as old as her son then. Find their present ages.<BR>\n" );
document.write( "***<BR>\n" );
document.write( "let x=son's age<BR>\n" );
document.write( "x+20=mother's age<BR>\n" );
document.write( "..<BR>\n" );
document.write( "10 yrs ago:<BR>\n" );
document.write( "x-10=son's age<BR>\n" );
document.write( "x+20-10=x+10=mother's age<BR>\n" );
document.write( "x+10=3(x-10)<BR>\n" );
document.write( "x+10=3x-30<BR>\n" );
document.write( "2x=40<BR>\n" );
document.write( "x=20<BR>\n" );
document.write( "x+20=40<BR>\n" );
document.write( "son's age=20<BR>\n" );
document.write( "mother's age=40 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );