If annual growth rate of a population is 1.5-2%, what number of years will be required to double the population
When crude death rate is substracted from crude bih rate , the net residual is current annual grow rate , exclusive of migration. When the annual growth rate of a population is 1.5% to 2.0%, it takes 35-47 years to double the size of population. Reference : Park&;s textbook of preventive and social medicine, 23rd edition, pg no: 481, table 5
70-47 years
35-47 years
35-28 years
28-23 years
Demography and family planning