Answer:
About 28,671,342 people
Step-by-step explanation:
This is compound growth problem. This goes by the formula:
[tex]F=P(1+r)^t[/tex]
Where
F is the future amount (in 3 years)
P is the present amount (28.5 million)
r is the rate of growth (0.4% = 0.4/100 = 0.004)
t is the time in years (3 years)
We first, need to find the rate of growth annually. It is given 0.4% every 2 years, so in 1 year that would be:
0.4%/2 = 0.2% = 0.002
Now, we put the information into formula and solve:
[tex]F=P(1+r)^t\\F=28500000(1+0.002)^3\\F=28500000(1.002)^3\\F=28,671,342[/tex]
So, around 28,671,342 people will be infected in 3 years.
