This reasoning is actually a concept of stealing. It means to lead people into the trap of three people spending 10 yuan. Three people each spend 10 yuan =30 yuan, the boss returns to 5 yuan =25 yuan+the waiter hides 2 yuan =27 yuan. Each person returns one yuan, that is, each person pays 9 yuan 3 people *9 yuan =27 yuan. That is, the money spent by three people is 27 yuan, and the money taken by the boss and waiter is also 27 yuan. Misleading reasoning lies in trying to mislead people to consume 10 yuan. But in fact, everyone only spent 9 yuan to stay in the hotel. That is, three people use 27 yuan. The two yuan taken by the waiter can't be added to the customer's money.

The real formula should be: customer part: 10 three people each = one yuan per 30 yuan boss after the refund, that is, each person goes out of 9 yuan =27 yuan.

Boss part: Take 30 yuan back, 5 yuan =25 yuan waiter takes 2 yuan =27 yuan (the design waiter here is the boss. Not a customer. )

What you pay is equal to what the boss gets. The amount of money is correct. The waiter's two yuan should belong to the boss, not the customer.