
Ben B. answered 11/13/14
Tutor
5
(8)
Experience Aerospace Engineer with Master's Degree in Physics
I think you want to start with this growth rate formula:
P= Po (1 + r )x
where Po is the starting population, P= P(x) is the population later after x intervals
Since P doubles in 19 months, then
P= Po (2)1 and so,
P(5 years)= 30,000 (2)x
where x= 60/19 (number of intervals of interest.