document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=18745>Question 18745</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Percent of Change is what we are doing at this time. I do not understand this at all.  \r<BR>\n" );
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document.write( "State whether each percent of change is a percent of increase or a percent of<BR>\n" );
document.write( "decrease. Then find each percent of change. Round to the nearest whole percent.\r<BR>\n" );
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document.write( "problem 1. original: 50<BR>\n" );
document.write( "              New: 70           Please explain this to me. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #9041 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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=9041\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Well, first you'll notice that there is an increase, right? Because 70 is more than 50. And the amount of the increase is: the new value minus the old value, or 70 - 50 = 20.\r<BR>\n" );
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document.write( "So, the amount of increase is 20.<BR>\n" );
document.write( "The question is now, what percentage of the old value (50) is the amount of increase (20)? Remember that percent means out of 100.\r<BR>\n" );
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document.write( "You can find out by using proportions...remember those?\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=20%2F50+=+x%2F100 ALIGN=MIDDLE  ALT=\"20%2F50+=+x%2F100\"   DISABLED_style= \"max-width:90%; height:auto;\" > Solve for x. Multiply both sides by 100 and simplify.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28100%29%2820%29%2F50+=+x ALIGN=MIDDLE  ALT=\"%28100%29%2820%29%2F50+=+x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+40 ALIGN=MIDDLE  ALT=\"x+=+40\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The answer is: 40% increase.\r<BR>\n" );
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document.write( "If you like formulas better, then here's the formula:\r<BR>\n" );
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document.write( "Let N = new value, O = old value:\r<BR>\n" );
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document.write( "Percent change = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%28N+-+O%29%2FO%29%28100%29 ALIGN=MIDDLE  ALT=\"%28%28N+-+O%29%2FO%29%28100%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > If this is positive, then it's an increase. If it's negative, then it's a decrease.<BR>\n" );
document.write( "Let's see if this works for your problem:\r<BR>\n" );
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document.write( "N = 70, O = 50\r<BR>\n" );
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document.write( "Percent change = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%2870+-+50%29%2F%2850%29%29%28100%29 ALIGN=MIDDLE  ALT=\"%28%2870+-+50%29%2F%2850%29%29%28100%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2820%29%28100%29%2F50+=+%2820%29%282%29 ALIGN=MIDDLE  ALT=\"%2820%29%28100%29%2F50+=+%2820%29%282%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 40% and it's positive so it's an increase.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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