document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=47766>Question 47766</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0072549017/algebrahomeworkh>Beginning Algebra</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> The electricity costs of a business decreased from $12,000 one year to 10,920 the next.  What is the rate of decrease?\r<BR>\n" );
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document.write( "I know the difference if $1080.00 from one year to the next but how do I get the % of decrease which formula do I use?\r<BR>\n" );
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document.write( "Thank You </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #31570 by </B><A HREF=/tutors/aboutme.mpl?userid=tutorcecilia><B>tutorcecilia(2152)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=tutorcecilia><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=tutorcecilia><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=31570\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the formula for percentage increases and decreases:<BR>\n" );
document.write( "(Old amount) - (New amount) / (old amount) x 100% = Percent of decrease<BR>\n" );
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document.write( "(12,000) - 10,920)/(12,000) x 100% = Percent of decrease<BR>\n" );
document.write( "1080/12,000 x 100%<BR>\n" );
document.write( ".09 x 100%<BR>\n" );
document.write( "9% = Percent of decrease\r<BR>\n" );
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document.write( "Check:<BR>\n" );
document.write( "12,000 x .09 (9%) = 1080<BR>\n" );
document.write( "12,000 - 1080 = 10,920 [Checks out]<BR>\n" );
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document.write( " </SPAN>\n" );
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