In a certain country, a person born in every 7seconds and a person dies every 13 seconds. Therefore the birth and death rates account for a population growth rate of one person?

In a certain country, a person born in every 7seconds and a person dies every 13 seconds. Therefore the birth and death rates account for a population growth rate of one person? Correct Answer 15.17seconds

A person is born every 7 seconds per second 1/7 person is born A person dies every 13 seconds So, per second 1/13 persondies Population growth rate is 1/7 - 1/13 = 6/91  and rate will be = 91/6 = 15.17 seconds ans: 15.17 seconds  

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