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sally
Lv 5
In the nineteenth century Sweden had a yearly population growth peaking at 1.2%?
What was its doubling rate and how is this problem figured out?
1 Answer
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- Anonymous1 decade agoFavorite Answer
Rule of 72. 72 divided by 1.2 equals 60. So the doubling rate is 60 years.
The Rule of 72 is an approximation that works pretty well.
More precisely:
e^T(.012)=2
T(.012)=ln2
T=ln2/.012=57.6
T=time to double=57.6 Years.
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