document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=460627>Question 460627</A>: <I><SPAN STYLE=\"word-break: break-all;\"> one's intelligence quotient, or IQ, varies directly as a person's mental age and inversely as that person's chronological age.  A person with a mental age of 27 and a chronological age of 20 has an IQ of 135. What is the chronological age of a person with a mental age of 30 and an IQ of 120? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #315938 by </B><A HREF=/tutors/aboutme.mpl?userid=sudhanshu_kmr><B>sudhanshu_kmr(1152)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=sudhanshu_kmr><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=sudhanshu_kmr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=315938\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "IQ * CHRONOLOGIAL AGE / MENTAL AGE = CONSTANT\r<BR>\n" );
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document.write( "135*20/27 = 120*X/30\r<BR>\n" );
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document.write( "=> X = 135 *20*30 /(120*27)\r<BR>\n" );
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document.write( "=> X = 25\r<BR>\n" );
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document.write( "so, chronologial age = 25\r<BR>\n" );
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document.write( "  </SPAN>\n" );
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