A decade is ten years. Half a decade is five years.Therefore. four decades are forty years, plus the five years, totalling forty-five years (45 years).
25 years
Seven and a half decades.
50 years is half a century or 5 decades
Half a century or five decades
There are 370 years in 37 decades
A decade is 10 years so eight and a half decades is 85 years.
A decade is ten years. Half a decade is five years.Therefore. four decades are forty years, plus the five years, totalling forty-five years (45 years).
45 years
25 years
Seven and a half decades.
50 years is half a century or 5 decades
Half a century or five decades
5 decades or 50 years
Half a century or five decades
five decades or just half a century
One century = 100 years so Half a century = 50 years (5 decades)