Ratio of 1 decades to 2 years

a decade is ten years

20/4 = 5/1.

To find the ratio of 1 decade to 2 years, we need to express both quantities in the same unit of time. Decades and years are both units of time, but they are different in magnitude.

First, we need to convert 1 decade to years. Since a decade is equal to 10 years, the ratio of 1 decade to years is 1:10.

Now, we can compare this ratio to the ratio of 2 years to years. Since both quantities are in the same unit (years), the ratio is simply 2:1.

Therefore, the ratio of 1 decade to 2 years is 1:10 compared to 2:1.