According to the "rule of 70," if a country has a population increase of 2% per year,how long will it take for it to double in size?
A) 35 years
B) 70 years
C) 72 years
D) 140 years
E) it can not be determined

Question

Quizplus · Accepted Answer

The "rule of 70" is a way to estimate the doubling time of a quantity growing at a constant rate. You divide 70 by the annual percentage growth rate. For a 2% growth rate, 70 divided by 2 equals 35 years.

According to the "Rule of 70," If a Country Has