document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=201833>Question 201833</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Justin is 4 years older than Ethan. In 9 years the sum of their ages will be 28. Find the age of each boy now.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #152075 by </B><A HREF=/tutors/aboutme.mpl?userid=PRMath><B>PRMath(133)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=PRMath><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=152075\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Justin is 4 years older than Ethan. In 9 years the sum of their ages will be 28. Find the age of each boy now. \r<BR>\n" );
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document.write( "Justin is 4 years older than Ethan.  Justin will ALWAYS be 4 years older than Ethan.  \r<BR>\n" );
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document.write( "So let's say Ethan is \"E\"<BR>\n" );
document.write( "Justin is \"J\".\r<BR>\n" );
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document.write( "Some day (we don't know when) but some day, when you add their ages together, their ages will add up to be 28.\r<BR>\n" );
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document.write( "So, we can say:    E + J = 28\r<BR>\n" );
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document.write( "But.... Justin is 4 years older than Ethan:   J = 4 + E\r<BR>\n" );
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document.write( "Therefore, our equation of E + J = 28 should REALLY be: \r<BR>\n" );
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document.write( "J = 4 + E<BR>\n" );
document.write( "E + 4 + E = 28\r<BR>\n" );
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document.write( "Do you see how we replaced \"J\" with \"4 + E\"?  \r<BR>\n" );
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document.write( "Ok, so now we have:\r<BR>\n" );
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document.write( "E + 4 + E = 28           (Let's combine our like terms)<BR>\n" );
document.write( "2E + 4    = 28           (1E + 1E = 2E)<BR>\n" );
document.write( "2E        = 28 - 4       (Let's subtract 4 from both sides)<BR>\n" );
document.write( "2E        = 24           (Now let's divide both sides by 2)\r<BR>\n" );
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document.write( " E        = 12\r<BR>\n" );
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document.write( "SO if Ethan is 12 and Justin is 4 years older, Justin is 16.\r<BR>\n" );
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document.write( "ETHAN  = 12<BR>\n" );
document.write( "JUSTIN = 12 + 4 which is 16\r<BR>\n" );
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document.write( "If you combine (add) their ages:  12 + 16 = 28\r<BR>\n" );
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document.write( "BUT they are at that age in NINE years!  So what are they now?  Just subtract 9 from both of their ages:\r<BR>\n" );
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document.write( "Ethan:   12 - 9 = 3<BR>\n" );
document.write( "Justin:  16 - 9 = 7\r<BR>\n" );
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document.write( "At 7, Justin is 4 years older than Ethan, who is three.\r<BR>\n" );
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document.write( "SOooooo right now they are 3 and 7.  \r<BR>\n" );
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document.write( " </SPAN>\n" );
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