The mayor of Dunderville process a new ordinance that would give a tax credit to parent who homeschool their children. Ten percent of Dunderville's residents approve of the ordinance. Of these, 7 out of 10 are women. All of Dunderville's other residents are against the ordinance. If there are equal numbers of men and women in Dunderville, then what fraction of Dudervelli's male residents approve of the ordinance?