GRE

简答题
What was the overall percentage change inprofits at company X from 2007 to 2009?

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D.
From 2007 to 2008,the profits increased by 3%;from 2008 to 2009,the profits increased by 5%.If the profit in 2007 was 100,then in 2008 it was 103 and in 2009 it was 103×1.05=108.15.This is equivalent to an overall increase of 8.15%.