college math
posted by tony .
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 (1/51/20)?

1
__
5
and
1
__
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