Question

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?

Answer 1

76.9 million people per year

Explanation:

The increase was 3,000 million people in 39 years, so the number per year was ...

3000/39 ≈ 76.9 . . . . million people per year