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What is the rule of​ 70? The rule of 70
A. states when an individual can be eligible for full social security benefits.
B. is a mathematical formula that is used to calculate the number of years it takes real GDP per capita or any other variable to double.
C. is a mathematical formula that is used to calculate the number of years it takes real GDP per capita or any other variable to quadruple.
D. is a mathematical formula that is used to calculate the number of years it takes real GDP per capita or any other variable to increase by two hundred percent. If real GDP per capita grows at a rate of 3.2 percent per​ year, it will take nothing years to double.

Respuesta :

Answer:

B. is a mathematical formula that is used to calculate the number of years it takes real GDP per capita or any other variable to double.

Explanation:

The rule of 70 is a means of estimating the number of years it takes for an investment or your money to double. The rule of 70 is a calculation to determine how many years it'll take for your money to double given a specified rate of return. The rule is commonly used to compare investments with different annual compound interest rates to quickly determine how long it would take for an investment to grow. The rule of 70 is also referred to as doubling time.

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