Answers

2015-07-28T10:23:55+05:30
13.31 = 10(1+r/100)^3

13.31/10 = (1+r/100)^3

=> 1331/1000 = (1+r/100)^3
=> (11/10)^3 = (1+r/100)^3
=> 1+r/100 = 11/10
=> r = 10%

Therefore, the rate of annual population growth is 10%. Use the same formula as of Compound Interest ;)
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