document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1094935>Question 1094935</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the sum on gregs age and sarahs age is 42. gregs age 20 years from now will be twice what sarahs age was 14 years ago </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #709503 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13203)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=709503\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br>Let x be one of their current ages; suppose it is Sarah's.  Then, since the sum of their ages is 42, Greg's current age is 42-x.<br><BR>\n" );
document.write( "We are told that Greg's age 20 years from now will be twice what Sarah's age was 14 years ago.<br><BR>\n" );
document.write( "Greg's age 20 years from now will be (42-x)+20 = 62-x; Sarah's age 14 years ago was x-14. So<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=62-x+=+2%28x-14%29 ALIGN=MIDDLE  ALT=\"62-x+=+2%28x-14%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=62-x+=+2x-28 ALIGN=MIDDLE  ALT=\"62-x+=+2x-28\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=90+=+3x ALIGN=MIDDLE  ALT=\"90+=+3x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+30 ALIGN=MIDDLE  ALT=\"x+=+30\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "Sarah's current age is 30; Greg's is 42-30 = 12 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );