im trying to solve a population growth problem. not sure if im using the right eqn. Please check:(adsbygoogle = window.adsbygoogle || []).push({});

Q: if the population doubles in two years, how long does it take to triple?

Solution:

general equation for population growth: N=No*e^(rt)

1) find unknown constant "r" from given

2No=No*e^(rt)

from equation, r= ln(2)/2

2) find "t" for population to triple

3No=No*e^(rt)

solving for t: t=2ln(3)/ln(2) ~ 3.170 years

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# Homework Help: Poplulation growth problem

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