It rained 12 of 30 days which is 12/30 of the month. 12/30 = 0.4 = 40%
If you try to figure the percentage of the days it snowed and post it here, we'll be glad to check it for you.
During the month of November, it rained on 12 of the 30 days. It also snowed on 3 days. On what percent did it rain? On what percent of days did it snow?
2 answers
it snowed on 3 of the 30 days which is 3/30 of a month. 3/30 = 0.3 = 30%