Three people eat noodles, each with a bowl of noodles 10 yuan. The boss said that three people shared 25 yuan, but the clerk didn't take back 5 yuan according to the boss's intention, but each person got back 1 yuan, so the total price was 25+3=28 (yuan), and the clerk had 2 yuan, which was 28+2=30 (yuan).

The salary of three people is 27 yuan. 25 yuan gives it to the boss and 2 yuan gives it to the shop assistant. That 3 yuan, everyone has 1 yuan.

Three people spent a total of 27 yuan, plus 2 yuan, who pocketed the money from the shop assistant, making a total of 29 yuan. This is a logical mistake and confuses the concept.

Extended data:

Confusing concepts is the mistake of using different concepts as the same concept in argument. Confusing the concept is usually a sophistry technique of improper argument, which either uses the different meanings of the same word or uses the semantic similarity or partial similarity of two words to achieve the purpose of confusing the concept. The meaning of words or concepts used in argumentative writing is vague and ambiguous, which is called vague and general fallacy.

What you think clearly may not be clearly expressed, and what you don't think clearly must not be clearly expressed. Fuzzy thinking or unclear understanding is one of the reasons for ambiguity. Deliberately using vague and general words or concepts to cover up the defects of argument, or abusing words to cover up your ignorance, is another reason for vagueness and generality.