Question

The population of a town increases every year by 2% of the population

beginning of that year. The number of years by which the total increase of
population be 40% is

Answer 1

Explanation:

A = Pe^rt

A = 1.4P

r = 0.02

t = ?

e^0.02t = 1.4

ln both sides

0.02t = ln(1.4)

t = ln(1.4)/0.02

t ~ 16.8 years