Question 1090680
Let n be the population of the village. If it grows by 5.5% each year, then:
n=3200
2n=6400
6400=3200*(1.055)^n
1.055^n=2
ln 1.055^n=n ln 1.055=ln 2
n=ln 2/ln 1.055=12.95, or about 13 years
☺☺☺☺