document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1163147>Question 1163147</A>: <I><SPAN STYLE=\"word-break: break-all;\"> After seven years raj will be twice as old as he was three years ago what is his present age <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #787132 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=787132\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "Using formal algebra....<br><BR>\n" );
document.write( "x = current age<BR>\n" );
document.write( "x+7 = age 7 years from now<BR>\n" );
document.write( "x-3 = age 3 years ago<br><BR>\n" );
document.write( "His age 7 years from now is (will be) twice his age 3 years ago:<br><BR>\n" );
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document.write( "Solve using basic algebra. I leave that to you.<br><BR>\n" );
document.write( "Solving the problem informally, using logical reasoning and simple mental arithmetic, can be good brain exercise.  Something like the following.<br><BR>\n" );
document.write( "The difference between 7 years from now and 3 years ago is 10 years.<BR>\n" );
document.write( "If the age 7 years from now is twice the age 3 years ago, and the difference is 10 years, then those two ages must be 20 and 10.<BR>\n" );
document.write( "So 7 years from now he will be 20, and 3 years ago he was 10; either way, his current age is 13.<br><BR>\n" );
document.write( "You of course should get that same answer using the algebraic solution method.<br><BR>\n" );
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