Answer:
Annual growth rate = 1.29% per year
Population in 2050 = 11.53 billion
Explanation:
Data provided in the question:
Population in 1999 = 6 billion = 6,000,000,000
Rate of increase in population = 212,000 per day
Now,
Number of days in a year = 365
Therefore,
Annual growth rate
= [ Growth rate per day × Number of days in a year ] ÷ initial population
= [ 212,000 × 365 ] ÷ 6,000,000,000
= 0.0129 per year
or
= 0.0129 × 100%
= 1.29% per year
Now,
2050 is 51 year from 1999
Population in 2050 = Population in 1999 × ( 1 + rate )ⁿ
= 6,000,000,000 × ( 1 + 0.0129 )⁵¹
= 11.53 billion
