OG详解-OG8 数学2 Q2

Choice C is correct. The table shows that for a certain region in 2016, the average number of store employees in warehouse stores was 365 and the average number of store employees in supermarkets was 130. Subtracting 130 from 365 yields 365-130, or 235. Therefore, the average number of store employees was 235 greater in warehouse stores than in supermarkets.
Choice A is incorrect. For this region in 2016, this is how much greater the average number of store employees was in department stores than in supermarkets. Choice B is incorrect. For this region in 2016, this is how much greater the average number of store employees was in warehouse stores than in department stores. Choice D is incorrect. For this region in 2016, this is the sum of the average number of store employees in warehouse stores and in supermarkets.