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A county invested 30 million yuan in 2008 and 36.3 million yuan in 20 10 in order to develop education and strengthen the investment in education funds.
Let the average annual growth rate be x.

3000×( 1+x)2=3630，

The solution is (1+x) 2 = 1.5438+0,

∫ 1+x > 0，

∴ 1+x= 1. 1，

∴x= 10%.

A: The average annual growth rate is 10%.

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