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There are a lot of topics on the monthly imperial examination of the Fantasy Journey to the West, which are very good, such as piano, chess, calligraphy and painting, history, tea art, Tang poetry and Song poetry, you can go to the fantasy forum to see, you can find it

Here's a similar question, and the answer is the same.

Explanation 1: That dollar is not less.

The three of them each took out ten yuan to the boss, the boss charged a total of 30 yuan, the boss took out five yuan to the spring waiter, and there was 25 yuan in his hand, the waiter was greedy for two yuan, and there were 2 in his hand, and the waiter gave one yuan to each of the three people, and the three people talked about 3 yuan, and the boss's 25 + waiter with Sensui's 2 + 3 = 30 yuan for three people.

Explanation 2: Don't be deceived by this question, in fact, the reason is very simple.

27+2, it doesn't mean anything, these two numbers can't be added together at all. We might as well think of it this way, what is 27, is the sum of 25 yuan of the actual room fee and the 2 yuan hidden by the waiter. It already contains 2, and adding 2 doesn't make sense.

Correct calculation: the actual room fee is 25 yuan, and the waiter hides 2 yuan, which is a total of 27 yuan; "The remaining 3 yuan was distributed to the three people, and each person was given 1 yuan", 27 + 3 = 30, which is the money paid by the first three people. In this way, there is no contradiction.

According to the final result, each person actually paid 90 yuan, and the three of them totaled 270 yuan, 270 = 250 (the accommodation fee charged by the boss) + 20 (the money hidden by the waiter), the two yuan of the waiter has actually been included in 270 yuan, and there is no point in using it to add 270 yuan, so there is no formula of 270 + 20, there is no loss of any money in the transaction process, and it does seem that there is 10 yuan lost on the surface, In fact, only Yu Liang was misled by the meaningless formula of 270 + 20, and the person who asked the question wanted to use the equation of 270 (accommodation fee + money hidden by the waiter) + 20 (money hidden by the waiter) = 290 (meaningless result) and 270 (accommodation fee + money hidden by the waiter) + 30 (the returned money received by the guest) = 300 yuan (the total amount of money that appeared at the beginning of the question).

Of the 20 left by the waiter, there are 10 yuan starting with theirs, and 10 yuan is the boss's.

The algorithm was wrong, and the 270 yuan paid by the three people already included the 20 yuan stolen by the waiter.

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