document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1116969>Question 1116969</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Jill is 2 times as old as Amanda. The sum of their ages 7 years ago was 13. 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 #731897 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=731897\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font color=\"black\" face=\"times\" size=\"3\"><BR>\n" );
document.write( "J = Jill's current age<BR>\n" );
document.write( "A = Amanda's current age\r<BR>\n" );
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document.write( "J = 2*A because \"Jill is 2 times as old as Amanda\"\r<BR>\n" );
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document.write( "Seven years ago, Jill was J-7 years old and Amanda was A-7 years old. The sum of their ages back then was 13, so,<BR>\n" );
document.write( "(J-7)+(A-7) = 13<BR>\n" );
document.write( "J+A-14 = 13<BR>\n" );
document.write( "J+A-14+14 = 13+14<BR>\n" );
document.write( "J+A = 27\r<BR>\n" );
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document.write( "Plug in J = 2A and solve for A<BR>\n" );
document.write( "J+A = 27<BR>\n" );
document.write( "2A+A = 27<BR>\n" );
document.write( "3A = 27<BR>\n" );
document.write( "A = 27/3<BR>\n" );
document.write( "A = 9\r<BR>\n" );
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document.write( "Use this to find J<BR>\n" );
document.write( "J = 2*A<BR>\n" );
document.write( "J = 2*9<BR>\n" );
document.write( "J = 18\r<BR>\n" );
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document.write( "<font color=red>Jill is 18 years old currently. Amanda is 9 years old currently.</font>\r<BR>\n" );
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document.write( "As a check, if we go back 7 years then Jill is now 11 years old while Amanda is 2 years old. Their past ages sum to 11+2 = 13.<BR>\n" );
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