document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1115763>Question 1115763</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The doubling period of bacterial population in 20 minutes. At time t = 120 minutes, the bacterial population was 6000. <BR>\n" );
document.write( "What was the initial population at time t = 0?<BR>\n" );
document.write( "Find the size of the bacterial population after 4 hours?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #730594 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=730594\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The population doubles every 20 minutes, in 120/20 there are 6 time periods<BR>\n" );
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document.write( "Therefore initial population is (6000/2^6) = 93.75 approximately 94<BR>\n" );
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document.write( "in 240 minutes there are 240/20 = 12 time periods<BR>\n" );
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document.write( "we know the population is 6000 at time 120<BR>\n" );
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document.write( "there are 120/20 = 6 additional time periods<BR>\n" );
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document.write( "population after 240 minutes = 6000 * 2^6 = 384,000<BR>\n" );
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