Making reasonable inferences based on proportion statistics

In a study of pain relievers, 50 people were given product A, and all but 15 experienced relief. in the same study, 20 people were given product B, and all but 3 experienced relief.

Fill in the blanks of the statement below to make the statement the most reasonable possible.

Product(A or B)performed better in the study because only %_____failed to get relief with this product, whereas %_______failed to get relief with Product (A or B)