Calculate the annual rate of natural increase of a population(r) from the following data: the population has 1000 individuals, a birth rate of 60 per year and a death rate of 10 per year.

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To calculate the annual rate of natural increase of a population, we use the formula:

\[

r=\frac{(B-D)}{P}

\]

Where:

– \(r\) is the rate of natural increase.

– \(B\) is the number of births per year.

– \(D\) is the number of deaths per year.

– \(P\) is the total population.

Given:

– \(B=60\) births per year.

– \(D=10\) deaths per year.

– \(P=1000\) individuals.

Plugging in these values:

\[

r=\frac{(60-10)}{1000}=\frac{50}{1000}=0.05

\]

The annual rate of natural increase of the population is 0.05 or \(5 \%\).