70 percent of a magazine’s readers are women. of those, 15% read the magazine’s movie reviews. if reading the movie reviews is independent of gender, what percent of men read the movie reviews?

If 70% of the readers are women, than 30% of them are men.
15% of the women who read magazine read the movie review. Reading reviews is independent of gender.
We know that 30% of men read the magazine, but we do not know how much of them read the movie review. 
We only know that the percentage of men who read the movie review is less than 30% of all (men + women).