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.)

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

1

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5

and

1
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20

1/5 = 4/20

4/20 - 1/20 = 3/20

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

To estimate the fraction of the population in the United States that will be between the ages of 65 and 85 in 2050, we can subtract the fraction of the population aged 85 or over from the fraction of the population aged 65 or over.

According to the information provided, 1 over 5 of the population will be aged 65 or over and 1 over 20 of the population will be aged 85 or over.

To find the fraction of the population aged 65 to 84, we need to subtract the fraction aged 85 or over from the fraction aged 65 or over.

First, let's find the fraction aged 85 or over:
1 over 20 = 1/20 = 0.05

Next, let's find the fraction aged 65 or over:
1 over 5 = 1/5 = 0.2

Now, subtract the fraction aged 85 or over from the fraction aged 65 or over:
0.2 - 0.05 = 0.15

Therefore, the estimated fraction of the population between the ages of 65 and 85 in 2050 is 0.15 (or 15%).