What is the ratio of the number of persons aged 65 years or older to the number of persons aged 20 to 64 years (number of persons aged 65 years or older/number of persons 20 to 64 x 100) referred to as?
a. Medicare ratio
b. old-age dependency ratio
c. older-adult-to-younger-adult ratio
d. Social Security ratio
Answer: B
Psychology
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