What fraction of the months of the year are of 30 days?

There are 12 months in a year, and 4 of those months have 30 days (April, June, September, and November). To find the fraction, you divide the number of 30-day months by the total number of months: ( \frac{4}{12} ), which simplifies to ( \frac{1}{3} ). Therefore, one-third of the months in a year have 30 days.