document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=388778>Question 388778</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do I solve the following word problems:\r<BR>\n" );
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document.write( "1. If the population of a city is 178500 and it is growing at the rate of 2.1% per annum, in how many years will the population be 210000?\r<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 #275192 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=275192\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> . If the population of a city is 178500 and it is growing at the rate of 2.1% per annum,<BR>\n" );
document.write( " in how many years will the population be 210000?<BR>\n" );
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document.write( "Let t = number of yrs to reach 210,000<BR>\n" );
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document.write( "178500*1.021^t = 210000<BR>\n" );
document.write( "Divide both sides by 178500<BR>\n" );
document.write( "1.021^t = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=210000%2F178500 ALIGN=MIDDLE  ALT=\"210000%2F178500\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "1.021^t = 1.17647<BR>\n" );
document.write( "Use logs here<BR>\n" );
document.write( "t*log(1.021) = log(1.17647) <BR>\n" );
document.write( "t = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=log%281.17647%29%2Flog%281.021%29 ALIGN=MIDDLE  ALT=\"log%281.17647%29%2Flog%281.021%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "t = 7.8  yrs<BR>\n" );
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document.write( "Check solution on a calc: enter: 178500*1.021^7.8 ~ 210,000   </SPAN>\n" );
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