Answer: 12 women
Explanation:
If there are 9 men then there are 12 women bcs when you divide 9 (# of men) by 3 (ratio of men) in the ratio men to women) you get three, and whatever you to do one side, you do to the other. So you multiply 4 (ratio of women) in the ratio of men to women) by 3 and you get 12.