document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1179521>Question 1179521</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Adriana is 7 years older than Joshua. The product of their ages is 144. How old is Adriana?<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 #809065 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=809065\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Adriana is 7 years older th yearsan Joshua. The product of their ages is 144. How old is Adriana?\r<BR>\n" );
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document.write( "Let Joshua's age be j years<BR>\n" );
document.write( "and Adriana's be y years<BR>\n" );
document.write( "j+7 =a<BR>\n" );
document.write( "j=a-7\r<BR>\n" );
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document.write( "j*a = 144\r<BR>\n" );
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document.write( "(a-7)*a = 144     ( substitute j)\r<BR>\n" );
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document.write( "a^2-7a-144=0\r<BR>\n" );
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document.write( "factorises\r<BR>\n" );
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document.write( "a^2-16a+9a -144=0\r<BR>\n" );
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document.write( "(a-16)(a+9) =0\r<BR>\n" );
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document.write( "Takinf the positive value <BR>\n" );
document.write( "Adirian's age is 16 years\r<BR>\n" );
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