Question

If the town with a population of 500 individuals sees an increase by 80 individuals and has 20 individuals dying, what would be the growth rate of the population?

• A. 0.16
• B. 0.5
• C. 0.12
• D. 0.008

Answer 1

The correct option is C 0.12

The rate of growth of a population takes into account the number of individual added, the number of individuals that died and the initial population. The correct formula to calculate the growth rate represented as ‘r’ would be $r=\frac{B-D}{N_0}$. Here B is the number of new individuals added, D stands for individuals that have died and $N_0$ stands for the initial population. Therefore in this case the growth rate ‘r’ will be $\frac{(80-20)}{500}=0.12$.