document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1138298>Question 1138298</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The U.S. Weather Bureau has a station on Mauna Loa in Hawaii that has measured carbon dioxide levels since 1959. At that time, there were 305 parts per million of carbon dioxide in the atmosphere. In 2005, the figure was 381 parts per million. Find the increase in carbon dioxide levels and the percent of increase. Round to the nearest tenth of a percent.\r<BR>\n" );
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document.write( "Increase carbon dioxide levels: 76\r<BR>\n" );
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document.write( "Percent increase: ?<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 #756127 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52776)</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=756127\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "<PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\">\r\n" );
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document.write( "You correctly determined increase of the CO2 level : it is 76 parts per million.\r\n" );
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document.write( "To determine the percent of increase, you should relate this increase of 76 to the base level of 305 and then multiply \r\n" );
document.write( "this ratio by 100 to get the percentage:\r\n" );
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document.write( "    The percent of increase = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%28381+-+305%29%2F305%29%2A100 ALIGN=MIDDLE  ALT=\"%28%28381+-+305%29%2F305%29%2A100\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2876%2F305%29%2A100 ALIGN=MIDDLE  ALT=\"%2876%2F305%29%2A100\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 24.92%.\r\n" );
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document.write( "Solved.\r<BR>\n" );
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document.write( "On percentage, &nbsp;see the lessons \r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=http://www.algebra.com/algebra/homework/percentage/lessons/Percentage-problems.lesson>Percentage problems</A>\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=http://www.algebra.com/algebra/homework/Percentage-and-ratio-word-problems/Percentage-word-problems-%28Type-1-problems-Finding-the-Part%29.lesson>Percentage word problems (Type 1 problems, Finding the Part)</A>\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=http://www.algebra.com/algebra/homework/Percentage-and-ratio-word-problems/Percentage-word-problems-%28Type-2-problems-Finding-the-Rate%29.lesson>Percentage word problems (Type 2 problems, Finding the Rate)</A>\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=http://www.algebra.com/algebra/homework/Percentage-and-ratio-word-problems/Percentage-word-problems-%28Type-3-problems-Finding-the-Base%29.lesson>Percentage word problems (Type 3 problems, Finding the Base)</A>\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=http://www.algebra.com/algebra/homework/Percentage-and-ratio-word-problems/More-complicated-percentage-problems.lesson>More complicated percentage problems</A>\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=http://www.algebra.com/algebra/homework/Percentage-and-ratio-word-problems/Problems-on-percentage-that-lead-to-unexpected-results.lesson>Problems on percentage that lead to unexpected results</A>\r<BR>\n" );
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document.write( "in this site.\r<BR>\n" );
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document.write( "They are written specially for you.\r<BR>\n" );
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document.write( "Read them and become an expert in this area.\r<BR>\n" );
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document.write( "Start from the very first lesson of the list.\r<BR>\n" );
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document.write( "Consider these lessons as your textbook, &nbsp;handbook, &nbsp;tutorials and &nbsp;(free of charge) &nbsp;home teacher.\r<BR>\n" );
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