document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1165035>Question 1165035</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In sixteen year Bob will be three times as old as he is now. How old is Bob now? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #789475 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=789475\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "x = Bob's age now<br><BR>\n" );
document.write( "The information in the problem gives you two ways to express his age 16 years from now:<br><BR>\n" );
document.write( "x+16 = his age 16 years from now<BR>\n" );
document.write( "3x = his age 16 years from now<br><BR>\n" );
document.write( "Those two expressions represent the same number, so they are equal:<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2B16+=+3x ALIGN=MIDDLE  ALT=\"x%2B16+=+3x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "Solve using basic algebra.<br><BR>\n" );
document.write( "-------------------------------------<br><BR>\n" );
document.write( "An informal solution will use exactly the same calculations as the formal algebraic solution:<br><BR>\n" );
document.write( "The difference between \"three times his age\" and \"his age\" is two times his age.<br><BR>\n" );
document.write( "But the difference between his ages at the two times is 16 years, so 16 years is twice his current age.<br><BR>\n" );
document.write( "So his current age is 16/2 = 8.<br><BR>\n" );
document.write( " </SPAN>\n" );
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