document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=935752>Question 935752</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Usman`s father is twice as old as he is twenty years ago.Usman`s father is seven times as old as his son. Find their current ages? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #569038 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=569038\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Twenty years ago Usman`s father was twice as old as Usman is now<BR>\n" );
document.write( "Usman`s father is now seven times as old as his son. <BR>\n" );
document.write( "Find their current ages?<BR>\n" );
document.write( "=====<BR>\n" );
document.write( "Equations:<BR>\n" );
document.write( "f-20 = 2u<BR>\n" );
document.write( "f = 7*u<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Substitute for \"f\" and solve for \"u\"::<BR>\n" );
document.write( "7u-20 = 2u<BR>\n" );
document.write( "5u = 20<BR>\n" );
document.write( "u = 4 (son's age now)<BR>\n" );
document.write( "------<BR>\n" );
document.write( "f = 7u = 28 (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" );