document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1135184>Question 1135184</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Relatively aperture. The relative aperture , or f-stop, of a 23.5mm diameter lens is directly proportional to the focal length F of the lens. If 250-mm focal length has an f-stop of 6.3, find the f-stop of a 23.5mm diameter lens with a focal lengh ot 90mm.\r<BR>\n" );
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document.write( "Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #752753 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52781)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=752753\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .\r<BR>\n" );
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document.write( "I don't know from which source you retrieved this problem, but its formulation is incorrect.\r<BR>\n" );
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