题目

Once there were two mice. They were friends. One mouse lived in the country; the other mouse lived in the city. After many years the Country mouse saw the City mouse; he said, Do come and see me at my house in the country.” So the City mouse went. The City mouse said, This food is not good, and your house is not good. Why do you live in a hole in the field? You should come and live in the city. You would live in a nice house made of stone. You would have nice food to eat You must come and see me at my house in the city. The Country mouse went to the house of the City mouse. It was a very goo一个修路队要修路2320米，已经修了400米，剩下的如果每天修160米，还要几天才能修完？