Required Mathematical Intelligence

Chapter 46
If you read carefully, you can find out.

The three entered the hotel.The hotel manager said that each room costs 30 yuan a night.So, each person took out 10 yuan and entered the guest room.After a while, the manager found that the room cost only 25 yuan per room per night, so he ordered the waiter to return them 5 yuan.On the way, the waiter was calculating how to distribute 5 yuan to 3 people.Therefore, he paid 1 yuan per person and charged 2 yuan himself.

This means that 3 people pay a total of 27 yuan in rent.Add 2 yuan for the waiter = 29 yuan.

So, what about 1 yuan?

[Answer: 3 × 9 = 27 yuan, which already includes the 2 yuan taken away by the buddy, and should not be added repeatedly when calculating the total.

我们可以这样想，客人付了27元（其中25元给了老板，2元给了伙计），这时候客人裤兜里还有3元，所以式子应该是：25 2 3=30元]
(End of this chapter)