Question

Aging in the United States In 2050, about 1 over 5 of the population will be aged 65 or over and about 1 over 20 of the population will be aged 85 or over. Estimate the fraction of the population that will be between the ages of 65 and 85 in 2050. (Source: U.S. Census Bureau.)

Answer 1

Exactly what is (1/5-1/20)?

Answer 2

1
__
5

and

1
__
20

Answer 3

1/5 = 4/20

4/20 - 1/20 = 3/20

Answer 4

in about 2050 about 1/5 of the population will be aged 65 or over and about 1/20 of the population will be aged 85 or over. estimate the fraction of the population that will be between the ages of 65 and 85 in 2050