Hi,

I know how to find the population growth if a growth rate is given but how do I find thegrowth rateif only number of years and estimated population given.ie population now = 23600 and after 53 years will exceed 35000

Thanks...Mark

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- January 25th 2010, 02:26 AMmanich44Population Growth rate formula
Hi,

I know how to find the population growth if a growth rate is given but how do I find the__growth rate__if only number of years and estimated population given.ie population now = 23600 and after 53 years will exceed 35000

Thanks...Mark - January 25th 2010, 02:42 AMe^(i*pi)
Exponential growth is modelled by

Where

- = Number at time
- = Number at
- = growth constant
- = time

In your example there is enough information to find . Rearranging the equation to make k the subject:

The equation at the top is one you should learn as it's rarely given in exams