The story of selling onions

In fact, the sum of 100 Jin and 100 yuan can't be wrong. When counted separately, Confucius was singled out because of his different values. This is actually an imprecise logical problem, and the concept has been stolen.

1 yuan a catty, that is, green onions and green onions are one yuan a catty. When he bought green onions and green onions respectively, the weight of green onions was 70 cents and that of green onions was 30 cents, but the unit price changed. Green onions are less than 3 cents a catty, green onions are less than 7 cents a catty, and the last 50 yuan was bought.

The simplest statement: according to the multiplication distribution rate, c(a+b)=ac+bc, in this problem, the weight of onion is substituted into A, the weight of onion is substituted into B, and the money per catty is substituted into C, which can be calculated.

Extended data:

Stealing concepts is a logical error in the process of thinking and argumentation, consciously or unconsciously violating the logical requirements of identity and replacing one concept with another. Stealing the concept is also a common sophistry. Mainly has the following performance:

(1) arbitrarily change the connotation and extension of a concept to make it another concept.

(2) Using polysemous words can express the characteristics of several different concepts and deliberately confuse different concepts.

(3) Grasping some similarities between concepts and obliterating the essential differences between different concepts.

(4) Confuse the concepts of set and non-set.

For example, some people say that Odmok lies, and he argues, "Whoever lies is talking about something that doesn't exist, and you can't talk about something that doesn't exist, so no one can lie." In Odysseus' sophistry, the word "non-existence" was used twice, but the concept it expressed was different.

The former expresses the concept of "not in line with the facts", while the latter expresses the concept of "something that doesn't exist at all". He just used it on purpose? Concept to steal the previous concept.