How many decades is 90 years?

Answer 1

Oh, dude, 90 years is like 9 decades. It's simple math, you know, just divide 90 by 10 because each decade is 10 years. So, yeah, 9 decades. Math can be fun, right?

Answer 2

well Dec means ten and if there is 90 years there is 10x9 which is 90 so there is 9 decades in 90years...

simples how old are you¿ none of your business i luv u cameron palanca