What fraction of 1 year is 9 months?

To determine the fraction of 1 year that is 9 months, we need to consider that a year has 12 months. Therefore, the fraction of 1 year that is 9 months is 9/12. This fraction can be simplified to 3/4 by dividing both the numerator and the denominator by their greatest common factor, which is 3. So, 9 months is 3/4 of a year.