document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=214369>Question 214369</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Respected sir,\r<BR>\n" );
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document.write( "plz solve my maths problem.\r<BR>\n" );
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document.write( "1] In ten years ,david will be four times as old as aaron.twenty years ago,david was twice as old as ellen,if david is seven years older than ellen,how old is aaron?\r<BR>\n" );
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document.write( "waiting for yur reply.\r<BR>\n" );
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document.write( "thank u. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #161907 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=161907\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let d = david's age now.<BR>\n" );
document.write( "let a = aaron's age now.<BR>\n" );
document.write( "let e = ellen's age now.<BR>\n" );
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document.write( "In ten years ,david will be four times as old as aaron.<BR>\n" );
document.write( "d+10 = 4*(a+10) = 4a+40<BR>\n" );
document.write( "d = 4a+30<BR>\n" );
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document.write( "Twenty years ago,david was twice as old as ellen.<BR>\n" );
document.write( "d-20 = 2*(e-20)<BR>\n" );
document.write( "d-20 = 2e-40<BR>\n" );
document.write( "d = 2e-20<BR>\n" );
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document.write( "If david is seven years older than ellen,how old is aaron?<BR>\n" );
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document.write( "d = e+7<BR>\n" );
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document.write( "Since d = 2e-20 and d = e+7, then 2e-20 must equal e+7<BR>\n" );
document.write( "Equation to solve is:<BR>\n" );
document.write( "2e-20 = e+7<BR>\n" );
document.write( "This results in e = 27<BR>\n" );
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document.write( "Ellen's age is 27<BR>\n" );
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document.write( "Since d = e+7, this means that David is 7 years older than Ellen which makes David = 34 years old.<BR>\n" );
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document.write( "Since d = 4a+30, and d = 34, then we have:<BR>\n" );
document.write( "34 = 4a+30<BR>\n" );
document.write( "This results in a = 1<BR>\n" );
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document.write( "David is 34 years old<BR>\n" );
document.write( "Aaron is 1 year old<BR>\n" );
document.write( "Ellen is 27 years old.<BR>\n" );
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document.write( "In 10 years Aaron is 11 and Dave is 44.<BR>\n" );
document.write( "4 * 11 = 44 so this part of the original equation is good.<BR>\n" );
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document.write( "20 years ago, David was twice as old as Ellen.<BR>\n" );
document.write( "34-20 = 14<BR>\n" );
document.write( "27-20 = 7<BR>\n" );
document.write( "14/7 = 2 so this part of the equation is good also.<BR>\n" );
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document.write( "Answer to your question is:<BR>\n" );
document.write( "Aaron is 1 year old.<BR>\n" );
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document.write( " </SPAN>\n" );
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