Answer: 59106
Step-by-step explanation:
We would apply the formula for exponential decay which is expressed as
A = P(1 - r)^ t
Where
A represents the population after t years.
t represents the number of years.
P represents the initial population.
r represents rate of growth.
From the information given,
P = 60000
r = 0.1% = 0.1/100 = 0.001
t = 2015 - 2000 = 15 years
Therefore
A = 60000(1 - 0.001)^15
A = 60000(0.999)^15
A = 59106