document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1020034>Question 1020034</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In 3 years, Jeff will be three times as old as his sister iya. A year ago, Jeff has 7 times as add as iya. How old are they now ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #635987 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=635987\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hi there,<BR>\n" );
document.write( "In 3 years, Jeff will be three <BR>\n" );
document.write( "times as old as his sister iya.<BR>\n" );
document.write( "J + 3 = 3(I + 3)<BR>\n" );
document.write( "J + 3 = 3I + 9<BR>\n" );
document.write( "J = 3I + 6.......(1)<BR>\n" );
document.write( "A year ago, Jeff has 7 times <BR>\n" );
document.write( "as old as iya. <BR>\n" );
document.write( "J - 1 = 7(I - 1).....(2)<BR>\n" );
document.write( "Replace J in Eq(2) with<BR>\n" );
document.write( "3I + 6 from Eq(1)<BR>\n" );
document.write( "J - 1 = 7(I - 1)<BR>\n" );
document.write( "3I + 6 - 1 = 7(I - 1)<BR>\n" );
document.write( "3I + 5 = 7I - 7<BR>\n" );
document.write( "Collect like terms<BR>\n" );
document.write( "3I - 7I = - 7 - 5<BR>\n" );
document.write( "- 4I = - 12<BR>\n" );
document.write( "  I = -12/-4<BR>\n" );
document.write( "I = 3<BR>\n" );
document.write( "Jeff is 15 years old<BR>\n" );
document.write( "Iya is 3 years old<BR>\n" );
document.write( "Hope this helps :-) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );