According to the "Rule of 70," it will take 4 years for real GDP per capita to double when the growth rate of real GDP per capita is

Question

Quizplus · Accepted Answer

The "Rule of 70" states that to determine the approximate number of years it takes for a variable to double, we divide 70 by the annual growth rate of that variable. 
Thus, to find out how long it will take for real GDP per capita to double, we divide 70 by the growth rate of real GDP per capita. 
Dividing 70 by 4 gives us 17.5, which means it will take approximately 17.5 years for real GDP per capita to double when the growth rate of real GDP per capita is 4 percent. Therefore, the answer is C.

According to the "Rule of 70," It Will Take 4