If r=0.1, how long does it take a population to double?
A) 6.93 years
B) 0.7 years
C) 20 years
D) 0.05 years
E) 0.75 years

Question

Quizplus · Accepted Answer

The doubling time of a population can be estimated using the rule of 70, which states that the doubling time in years is approximately 70 divided by the annual growth rate percentage. Given r = 0.1, or a 10% growth rate, the calculation is 70 / 10 = 7 years. The closest answer to this calculation is 6.93 years.

If R=01, How Long Does It Take a Population to Double