A clothing manufacturer reports that unsalable garments, those found to be defective by inspectors plus those returned by retailers, total 7 percent of the garments produced.
Given that ...
7% of the garments this manufacturer produces are found to be unsalable (some are found to be defective by inspectors, others are just returned by retailers)
and that ...
All unsalable garments are recycled as scrap.
How can it be that ...
9% of garments are reported as recycled scrap?
Evaluate
What % of recycled scrap should we have been expecting? Why is 9% a surprising fact?
If we think that the only thing that gets recycled as scrap would be unsalable garments, then since 7% of garments are unsalable, we'd expect 7% of garments to end up as recycled scrap.
So if 9% of garments end up as recycled scrap, then there must be something in addition to unsalable garments that ultimately gets recycled as scrap.
It will have to be some form of salable (i.e. sellable) garment, since it can't be in the category of unsalable.
Goal
So it seems like we're looking for an answer that helps us to understand why some garments that are salable still end up being recycled as scrap. (maybe the manufacturer has a bunch of jeans leftover that they know they could sell at some store, but they want to take "that model" off the shelf so that it can be replaced with "this year's model", which would sell for more?)