In 2008, a certain factory produced 10% more widgets than it did in 2007, and its production in 2009 was 110% of its production in 2008. By approximately what percent would its production need to decrease the following year for the factory to produce the same number of widgets it did in 2007?
Options:
A) 12%
B) 17%
C) 20%
D) 24%
E) 30%
Let P be the original level of production in 2007.   Let x be the rate of production in 2010 compared to 2009.   x*1.1*1.1*P = P   x = 1/1.21 = 0.826 which is a decrease of about 17%.   The answer is 17%.
<result>B</result>
In 2008, a certain factory produced 10% more widgets than it did in 2007, and its production in 2009 was 110% of its production in 2008. By approximately what percent would its production need to decrease the following year for the factory to produce the same number of widgets it did in 2007?