Problema Solution
A country has a growth rate of 4.5% per year. The population is currently 5,298,000, and the land area of country A is 39,000,000 square yards. Assuming this growth rate continues and is exponential, after how long will there be one person for every square yard of land?
Answer provided by our tutors
P = 5,298,000 current population
A = 39,000,000 future population
r = 0.045 or 4.5% annual rate
t = the number of years
A = P(1 + r)^t
5298000(1 + 0.045)^t = 39000000
1.045^t = 39000000/5298000
........
........
t = 45.35 years
After 45.35 years there will 39,000,000 or one person for every square yard of land.