According to the rule of 70,
A)if a country is growing at 14% per year, its output will double in approximately 5 years.
B)if a country is growing at 10% per year, its output will double in approximately 7 years.
C)if a country is growing at 2% per year, its output will double in approximately 35 years.
D)all of the above are true.

Question

According to the rule of 70,
A)​if a country is growing at 14% per year, its output will double in approximately 5 years.
B)​if a country is growing at 10% per year, its output will double in approximately 7 years.
C)​if a country is growing at 2% per year, its output will double in approximately 35 years.
D)​all of the above are true.

Quizplus · Accepted Answer

The rule of 70 states that to find out approximately how long it takes for a variable to double, you divide 70 by the annual growth rate. Therefore, all of the choices given are correct according to the rule of 70.

According to the Rule of 70