Hi Roseally – it’s a good question, I can see how you might be confused. From your study guide and CC, you should have noted that (for instance) a VLDL would have a much greater lipid:protein ratio than say, an HDL. Because protein is more dense than lipid, high density lipoproteins do have more protein (as expected).
However, you need to read to read the paragraph 3 of the passage carefully:

Essentially, as we move from VLDL’s to IDL’s to LDL’s, we get the formation of very cholesterol rich lipoproteins (last sentence). Remember that lipids are both cholesterol and triglycerides (among other forms), so we can still get increasing cholesterol as long triglyceride content decreases so that the overall trend of lipid:protein ratio decreases as we move from VLDL’s to LDL’s.

Remember on the MCAT to trust what the passage says, and this is explicitly stated by the author.
Hope that answers your question.

-Matt