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Math
The price of apple in the year 2010 has increased by 15% from that of the previous year.In 2011 the price has previous year. In 2011 the price has decreased by 10% .In 2011, what was the increase in price respect to that of 2009?
A) 3.50%
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B) 4.50%
C) 5.50%
D) 6.50%