Question

The current birth rate per thousand is 32, whereas the corresponding death rate is 11 per thousand. The net growth rate in terms of population increase in per cent is given by 

(a) 0.0021% 

(b) 0.021% 

(c) 2.1% 

(d) 21%

Answer 1

(c) 2.1%

Net growth in population on 1000 = (32 — 11) = 21

\(\therefore\) Net growth rate =\(\big(\frac{21}{1000}\times100\big)\)% = 2.1%