A population's doubling time is 50 years. Find its growth rate per year.

Question

Round your answer to one decimal place.

 

The growth rate is ______ % per year.

Answer 1

The growth rate k is related to the doubling time T by the equation:

 

kT=ln 2

 

So:

50k = ln 2

k = (ln 2)/50 = 0.0138  or 1.4%