Problem Page

In a recent study, males used a new weight-loss supplement, and all but of them experienced weight loss after two weeks. In the same study, females used the same supplement, and all but of them experienced weight loss after two weeks.
Fill in the blanks of the statement below to make the statement the most reasonable possible.

The new weight-loss supplement was less effective on in the study because
of them failed to lose weight after two weeks, whereas only
of the failed to lose weight after two weeks.

The new weight-loss supplement was less effective on males in the study because a greater proportion of them failed to lose weight after two weeks, whereas only a smaller proportion of the females failed to lose weight after two weeks.