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In 1960, there were approximately 3,000 million people living on earth. In 1999, the population of earth was approximately 6,000 million people. What was the approximate rate of increase, in millions of people, each year between these two years
"...each year between these two years"
Two years? Time between 1960 and 1999 is 39 years
Going with that data ....
6000 = 3000(1+r)^39
2 = (1+r)^39 , so it doubled in 39 years
take 39th root of both sides:
2^(1/39) = 1+r
1.01793 = 1+r
r = .01793 or appr 1.793% / year
To calculate the approximate rate of increase in millions of people each year between 1960 and 1999, we need to find the difference in population and divide it by the number of years.
1. Calculate the difference in population between 1999 and 1960:
Population in 1999 - Population in 1960
6000 million - 3000 million = 3000 million
2. Calculate the number of years between 1960 and 1999:
1999 - 1960 = 39 years
3. Divide the difference in population by the number of years to find the approximate rate of increase per year:
3000 million / 39 years ≈ 76.92 million people
Therefore, the approximate rate of increase, in millions of people, each year between 1960 and 1999 is approximately 76.92 million people.
To calculate the approximate rate of increase in millions of people per year between 1960 and 1999, you need to find the difference in population and divide it by the number of years.
Here's the step-by-step calculation:
1. Find the difference in population between 1999 and 1960:
Population in 1999 = 6,000 million
Population in 1960 = 3,000 million
Difference in population = Population in 1999 - Population in 1960
Difference in population = 6,000 million - 3,000 million
Difference in population = 3,000 million
2. Find the number of years between 1960 and 1999:
Number of years = 1999 - 1960
Number of years = 39 years
3. Calculate the approximate rate of increase per year:
Rate of increase per year = Difference in population / Number of years
Rate of increase per year = 3,000 million / 39
Rate of increase per year ≈ 76.92 million
Therefore, the approximate rate of increase in millions of people per year between 1960 and 1999 was approximately 76.92 million people.