document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=783411>Question 783411</A>: <I><SPAN STYLE=\"word-break: break-all;\"> sara father is fourtimes as old as ahse is. in 18 years he will be exactly twice as old as she. 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 #476766 by </B><A HREF=/tutors/aboutme.mpl?userid=Cromlix><B>Cromlix(4381)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Cromlix><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=Cromlix><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=476766\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Father = 4* Sara's age<BR>\n" );
document.write( "F = 4S<BR>\n" );
document.write( "In 18 years he will be <BR>\n" );
document.write( "exactly twice as old as she is.<BR>\n" );
document.write( "F + 18 = 2(S + 18)<BR>\n" );
document.write( "Replace F with 4S (from 1st equation)<BR>\n" );
document.write( "4S + 18 = 2S + 36<BR>\n" );
document.write( "Collect like terms<BR>\n" );
document.write( "4S - 2S = 36 - 18<BR>\n" );
document.write( "2S = 18<BR>\n" );
document.write( "S = 9<BR>\n" );
document.write( "Current ages:<BR>\n" );
document.write( "Sara = 9 yrs old<BR>\n" );
document.write( "Father = 36 years old.<BR>\n" );
document.write( "Hope this helps.<BR>\n" );
document.write( ":-)<BR>\n" );
document.write( " </SPAN>\n" );
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