We can model the problem with the equation
[tex]P(t)=p[/tex]where
t= times
p = population
if the country doubles the population in 25 years
[tex]P(25)=2p[/tex]in other 25 five years the population doubles again
[tex]P(50)=2(2p)[/tex][tex]P(50)=4p[/tex]We are request to find the time (t) where the initial population (p) increase 4times
then given the equation
[tex]P(50)=4p[/tex]the initial population will take 50years to be FOUR times as much as the initial amount
