The worlds population was 3.3 billion in 1965, it is now 6.7 billion so it that instance of doubling took 34 years .
It took approximately 123 years for the world's population to double from 3 billion to 6 billion, from 1960 to 1983.
34 years
75 years
The time it takes for a population to double in size can be calculated using the rule of 70, which states that you divide 70 by the percentage growth rate of the population. For example, if a population grows at a rate of 3% per year, it would take approximately 70/3 = 23.3 years for the population to double in size.
The population will double when it reaches 100% growth, which is a 20% increase five times. Therefore, it will take 5 years x 5 = 25 years for the population to double.
It took the United States approximately 52 years to double its population from 100 million to 200 million people, from 1915 to 1967. This growth was driven by factors such as high birth rates, immigration, and post-World War II baby boom.
It took until the early 19th century for the global population to reach one billion. This milestone was reached around the year 1804.
The world population in 1950 was estimated to be around 2.5 billion people. This marked a significant increase from earlier centuries due to advancements in healthcare and food production. The population growth continued to accelerate in the following decades.
Sadly, the way babies are being continually aborted, not going to happen.
33.4 years for south Africa to double
how long did it take to double from 3 billion to 6 billion
With a 2009 rate of natural increase in Mexico of 1.13%, its population would be expected to double in ~61 years.
100 years
Depends on how much power thirst you drink.
mankind's don't need time to double the size. becauze they are very fast in doubling the population.
The Rule of 70 is a quick way to estimate how long it takes for a population to double in size based on its growth rate. To use the Rule of 70, divide 70 by the annual growth rate of the population. The result will give you approximately the number of years it takes for the population to double.
20 years
27.6 yearst = 0.69 / r where r is the growth rate
African countries take longer to "double time" meaninh the time it takes for a county's population to double its number
The world population reached one billion in 1804 and seven billion in 2012. That's a difference of 208 years.