document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1102423>Question 1102423</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The half-life of aspirin in your bloodstream is 12 hours. How long will it take for the aspirin to decay to 75% of the original dosage. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #717121 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=717121\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The half-life of aspirin in your bloodstream is 12 hours. How long will it take for the aspirin to decay to 75% of the original dosage. <BR>\n" );
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document.write( "0.75A = A(1/2)^(t/12)<BR>\n" );
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document.write( "0.75 = (1/2)^(t/12)<BR>\n" );
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document.write( "t/12 = log(0.75)/log(1/2)<BR>\n" );
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document.write( "t/12 = 0.4150<BR>\n" );
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document.write( "t = 4.9 hrs = 4 hr 54 min<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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