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Can you please solve this?

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Can you please solve this?

by divakar7 » Mon Aug 10, 2009 9:35 pm
From 2004 through 2007, the Dow Jones Industrials Average rose about 30%. However, during 2008, the Dow fell about 35%. About what percent did the Dow Jones change from 2004 through 2008?

( I am not understanding the logic :(..)
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Divakar KN
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by tohellandback » Mon Aug 10, 2009 9:39 pm
very badly written..

if it asks for the percent change in the average:

in 2004=200
in 2007=260
in 2008=260-35*260/100=169
percentage change from 2004 to 2008:
200-169/200 *100
31/2= 15.5 percent
The powers of two are bloody impolite!!
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