document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=681040>Question 681040</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Lisa will be twice as old as her brother Ralph in 6 years. Lisa was three times as old as Ralph 3 years ago. What are their ages now?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #422557 by </B><A HREF=/tutors/aboutme.mpl?userid=htmentor><B>htmentor(1343)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=htmentor><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=htmentor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=422557\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Lisa will be twice as old as her brother Ralph in 6 years. Lisa was three times as old as Ralph 3 years ago. What are their ages now?<BR>\n" );
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document.write( "Let L = Lisa's current age<BR>\n" );
document.write( "Let R = Ralph's current age<BR>\n" );
document.write( "In 6 years Lisa will be twice her brother's age:<BR>\n" );
document.write( "L+6 = 2(R+6)<BR>\n" );
document.write( "L = 2R + 12 - 6<BR>\n" );
document.write( "L = 2R + 6<BR>\n" );
document.write( "3 years ago Lisa was 3 times her brother's age:<BR>\n" );
document.write( "L-3 = 3(R-3)<BR>\n" );
document.write( "(2R+6)-3 = 3R - 9<BR>\n" );
document.write( "This gives R = 12<BR>\n" );
document.write( "So Ralph is 12 yrs old and Lisa is 2*12 + 6 = 30 yrs old </SPAN>\n" );
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