Mr. King is the manager (经理) of a hotel. One day all of the hotels in the city are full because there is a large meeting. In the evening, three men come into the hotel and ask for rooms. Mr. King says there are no rooms because of the meeting. The men are unhappy.
Mr. King wants to help them. He remembers that Room 418, a very small room is empty. He asks them if they would share (分享) a room. The three men says yes. Mr. King says the room would be thirty dollars, ten for each one (每一个). Each man gives him the money and then they go up to the room.
Mr. King soon begins to feel sorry. The price is too high for that small room, he thinks. He says to his assistant (助手), Here is five dollars. Take the money to the men in Room 418. I ask too much for their room.
The assistant takes the money. While she is on the way there, she starts to think, "How can three men divide (分配) five dollars? So the assistant returns (还) one dollar to each man and she keeps the two dollars for herself.
Each man pays ten dollars at first. After the assistant returns them one dollar each, each pay nine. There are three men. So $9x3= $27. The assistant keeps $2. $27 + $2= $29. Where is the missing (消失的) dollar?
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