Total number of humans in the past 150,000 years

This is a hard problem. Assume that:
1. the life span is 50.
2. the population growth rate is 1.0%/year
3. the population now is exactly 6B
4. people have kids at 25.
5. equal gender distribution.
6. everyone gets married and has kids.
7. humans have only been around for 150,000 years or so.


what is the total number of people who lived on the earth?

i keep hearing that most of the humans who lived on earth lives on it
right now!

.

Relevant Pages

  • Re: Total number of humans in the past 150,000 years
    ... the population growth rate is 1.0%/year ... everyone gets married and has kids. ... humans have only been around for 150,000 years or so. ... > i keep hearing that most of the humans who lived on earth lives on it ...
    (sci.math)
  • Re: Total number of humans in the past 150,000 years
    ... the population growth rate is 1.0%/year ... humans have only been around for 150,000 years or so. ... | i keep hearing that most of the humans who lived on earth lives on it ... First of all, the life span wasn't close to 50, at least, a couple ...
    (sci.math)
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