7 billion people grow at a rate of 1.5% per year, How many people will there be in 13 years?

Question

With a current population of 7 billion. If the world ends in the year 2030 removing 70% of the people,If the population growth rate is constantly at 1.5% from the year 2017 to 2030, how many people will be left in the year 2030?

Answer 1

Damon, if we start with 7 billion, the next year, the population will be 101.5% of that. The next year will be 101.5% of the year before, etc.

 

In 2030, the new population is 70% of the total at the time.

 

7,000,000,000(1.015)¹³(.7) = you tell me