An isolated space station that has 18 lab grown babies every day. The average lifespan is 120 years. What is the total size of the population for the birth death rate ratio to be even? Im having a hard time figuring this out and Im trying to design the station around the population. If Im postimg in the wrong area please tell me where I should ask instead.
This is a relatively simple math problem.
18 people/day x 365 day/year x 120 years = 788,400 people.
This is assuming that every single person born lives for exactly 120 years. Realistically, there would be some variance (e.g. some people may die very young due to accident or disease, some people might live significantly longer), but this is still a good estimate. There will probably not be a significant difference between a society with a population of 787,000 and one with 790,000.
This is also assuming that none of the people reproduce - perhaps all the children are the same sex? If members of the population are capable of sexual reproduction, then they will reproduce. In this case, the population will grow logistically (exponentially if resources are unlimited) until they level out at an amount based on how many resources are available.