document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=724762>Question 724762</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A family had fifteen children, each of them born a year and a half apart. The oldest child's age is eight times that of their youngest sibling's. How old is the oldest sibling? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #443900 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=443900\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  A family had fifteen children, each of them born a year and a half apart. The oldest child's age is eight times that of their youngest sibling's. How old is the oldest sibling?<BR>\n" );
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document.write( "Let a(1) = x<BR>\n" );
document.write( "Then a(15) = 8x<BR>\n" );
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document.write( "You have an arithmetic sequence with d = 1.5<BR>\n" );
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document.write( "a(15) = a(1)+14*d<BR>\n" );
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document.write( "8x = x + 14*1.5<BR>\n" );
document.write( "7x = 21<BR>\n" );
document.write( "x = 3 (age of the youngest child)<BR>\n" );
document.write( "8x = 24 (age of the oldest)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
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