Hello, landlord. I remember when I was in elementary school, there was a question in the math book that was the same as yours, but it was changed to buy crabs! We can take selling tofu as an analogy, and we can clearly know it! A basket of tofu sells 2.0 yuan a catty alone. Now there are two people who buy half. Then the tofu buyer will give you 1.0 yuan a catty, and B will give you 1.0 yuan a catty. Do you sell it? The answer is clear!