Seven tenths !
1/2
It is 15/100 or 3/20 of a century in its simplest form
It is: 35/100 = 7/20 simplified
50 years is 1/2 a century
4/5 of a century is 80 years.
A century is 100 years, and a millennium is 1000 years, so a millennium has 10 centuries.
0.26
It is 1/10 because a decade is 10 years and a century is 100 years
The 18th century was the years from 1701 to 1800.
Seven tenths !
85/100
It is: 7/100
A century has 100 years; so 25 years is one quarter of 100 years.
It is 15/100 or 3/20 of a century in its simplest form
Write 3 decades as a fraction of 20
1/425 years is a 1/4 of a century which is 100 years