document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1097321>Question 1097321</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Ciaran is twice as old as Brid.30 years ago,Ciaran was 12 times as old as Brid.How old are they know </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #711724 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=711724\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let C be Ciaran's age and B be Brid's age, then<BR>\n" );
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document.write( "1) C = 2 * B<BR>\n" );
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document.write( "2) C - 30 = 12 * (B - 30)<BR>\n" );
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document.write( "use equation 1 and substitute for C in equation 2<BR>\n" );
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document.write( "2B - 30 = 12B - 360<BR>\n" );
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document.write( "10B = 330<BR>\n" );
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document.write( "B = 33<BR>\n" );
document.write( "C = 2 * 33 = 66<BR>\n" );
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document.write( "Ciaran is 66 and Brid is 33<BR>\n" );
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