document.write( "Question 1128746: a vacuum cleaner dealership sold 430 units in 2011 and 471 units in 2012. Find the percent increase or decrease in the number of units sold \n" ); document.write( "
Algebra.Com's Answer #745244 by ikleyn(52809)\"\" \"About 
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document.write( "Percentage increase is  \"%28%28471-430%29%2F430%29%2A100\" = 9.535%.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Take the difference;  relate it to the  BASE  value;  then multiply this fraction by  100  to get percentage.\r
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