What is one fourth of a decade?

Answer 1

2.5 years.

a decade equals 10 years.

divide it by 4 and you get the answer.

A bit more:

A decade is 10 years, so a fourth of that would be 2.5 years, or 30 months. There are 12 months to a year, and therefore, 120 months to a decade. To get the answer, you divide 10 months by 4, which is how you get the 2.5 years. To get the months, multiply the 2.5 years by 12.