document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1147795>Question 1147795</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Frank is eight years older than his sister. In three years he will be twice as old as she is. 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 #769131 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13200)</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=769131\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "(1) Algebra....<br><BR>\n" );
document.write( "let x be his sister's age<BR>\n" );
document.write( "then x+8 is his age<br><BR>\n" );
document.write( "His sister's age 3 years from now will be x+3; his age 3 years from now will be x+11.<br><BR>\n" );
document.write( "3 years from now, his age will be twice his sister's age:<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2B11+=+2%28x%2B3%29 ALIGN=MIDDLE  ALT=\"x%2B11+=+2%28x%2B3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "Solve using basic algebra (I leave that to you).<br><BR>\n" );
document.write( "(2) Logical reasoning....<br><BR>\n" );
document.write( "Since the difference in their ages is 8 years, Frank will be twice as old when he is 16 and his sister is 8.  Since that will be 3 years from now, their current ages are 13 and 5.<br><BR>\n" );
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