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In 2005, for each of the 14 million people present in a country, `0.028` were born and `0.008` died during the year. Using exponential equation, the number of people present in 2015 is predicted as
A. 25 millions
B. 17 millions
C. 20 millions
D. 18 millions

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Best answer
Correct Answer - B
Exponential equation
`dN//dt=(b-d)xxN`
`dN//10=(0.028-0.008)xx14(0.020)xx14`
`dN//10=.28`
`dN=28xx10`
`dN=2.8`
`14" million"+2.8" million"`
`=16.8" million"=17" millions."`
So, the number of people present in 2015 is predicted as 17 millions.

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