Question

Consider two scenarios for a nation's economic growth. Scenario A has real GDP growing at an average annual rate of 2%; scenario B has an average annual growth of 4%.
The nation's real GDP would double in about:_______
a. 25 years under scenario A, versus 12.5 years under scenario B.
b. 36 years under scenario A, versus 18 years under scenario B.
c. 36 years under scenario A, versus 9 years under scenario B.
d. 18 years under scenario A, versus 9 years under scenario B.

Answer 1

Answer: b. 36 years under scenario A, versus 18 years under scenario B.

Explanation:

The Rule of 72 is a rule in finance that will allows for the calculation of how long it will take for an investment to double given its interest rate.

The time is calculated by dividing 72 by the interest rate in question.

Scenario A

= 72/2

= 36 years.

Scenario B

= 72/4

= 18 years.