document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1099038>Question 1099038</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If half of the dimes in the United States disappear every 37 years –<BR>\n" );
document.write( "and are not replaced – how long will it take for the 4.2 billion dimes<BR>\n" );
document.write( "minted last year to be virtually all gone? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #713442 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=713442\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If half of the dimes in the United States disappear every 37 years –<BR>\n" );
document.write( "and are not replaced – how long will it take for the 4.2 billion dimes<BR>\n" );
document.write( "minted last year to be virtually all gone?<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "d = # of dimes, t = # of 37 year periods<BR>\n" );
document.write( "d = 4.2e9*0.5^t<BR>\n" );
document.write( "\"virtually all gone\" is not clearly defined math term.<BR>\n" );
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document.write( "At t = 10, d = 976,563 --> 370 years<BR>\n" );
document.write( "At t = 20, d = 954 --> 740 years </SPAN>\n" );
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