document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=830692>Question 830692</A>: <I><SPAN STYLE=\"word-break: break-all;\"> father age is 3 times as old as his son. in 10 years time,he will be double of his sons age . 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 #500819 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=500819\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> father age is 3 times as old as his son. in 10 years time,he will be double of his sons age . find their present ages<BR>\n" );
document.write( "------<BR>\n" );
document.write( "Equations:<BR>\n" );
document.write( "f = 3s<BR>\n" );
document.write( "f+10 = 2(s+10)<BR>\n" );
document.write( "====<BR>\n" );
document.write( "Substitute for \"f\" and solve for \"s\"::<BR>\n" );
document.write( "3s + 10 = 2s + 20<BR>\n" );
document.write( "s = 10 yrs (son's age now)<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "f = 3s<BR>\n" );
document.write( "f = 3*10 = 30 yrs (father's age now)<BR>\n" );
document.write( "=================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "==================== </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );