Question

The worldwide growth rate of the human population in 1970 was 2.09%, with a doubling time of 34 years. The growth rate in 2010 had decreased to 1.12%, if the rate continues dropping to 1.0%, what will the doubling time be?

a) 70 years
b) 60 years
c) 40 years

Answer 1

Answer: a 70yrs

Explanation:

Doubling time is the time it takes a country's population to double in size or value.

It is calculated by dividing 70 by the percentage growth rate

Doubling time =70/ 1.0%

Doubling time= 70 years