The "inverse dependency ratio" is defined as the ratio of
a. the number of parents and grandparents to the number of children. b. the number of dependents to the number of the total population.
c. the working-age population to the number of dependents.
d. the average number of dependents per head of household.

The correct answer is the option C: the working-age population to the number of dependents.

Explanation:

On one hand, the dependancy ratio is the name given, in the field of economics, to the term that refer to an age-population ratio that are and are not in the labor force. Moreover, this type of ratio focuses in measuring the pressure that the productive population has over the nonproductive population.

On the other hand, the inverse dependay ratio measures the amount of labor force that has to be provided regarding one dependent person. Therefore that it is understandable that the inverse dependency ratio is defined as the reatio of the working-age population to the number of dependents.

the earnings of a typical investor is around $1,000,000 to $10,000,000

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