2 decades to 4 years
How many years are in a decade?
Google years decade if you don't know.
Ratio = 20/4 = 5/1.
To convert 2 decades to years, you need to know that a decade is equal to 10 years. Therefore, 2 decades is equal to 2 × 10 = 20 years.
To further convert 20 years to 4 years, you need to divide the given value by 5.
20 years ÷ 5 = 4 years
Hence, 2 decades is equivalent to 4 years.