The highest wisdom to buy food

 

How much is the best wisdom to buy food? "The vendor replied:" two five. "Ye picked three tomatoes and put them in the tray. The stall owner said: "a pound and a half, three pieces of seven. "Grandpa said," I just need to make a soup, so I don't need that much. "I just removed the biggest tomato. The vendor quickly gave a glance and said, "One pound, two yuan, three yuan. "I looked at it and thought, the bigger the tomato, the less pressure it was. Isn't that big tomato Hollow. When I couldn't see it, I reminded my Lord: "He is wrong. "I didn't expect my grandfather to throw his hand on me and pay for it with just his hand. Bytes. Unexpectedly, the Lord did not take the two tomatoes in a plastic bag that he had removed. Instead, he took the big one that he had just removed and put down his seven cents. Then he turned his head and went ......