Question
A library has a certain number of books. In December, the library bought 301 new books and 203 books were loaned out. In January, the library lost 331 books and loaned out 194 books, after which 4505 books were left. How many books were there in the library in the beginning of December?
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A library has a certain number of books. In December, the library bought 301 new books and 203 books were loaned out. In January, the library lost 331 books and loaned out 194 books, after which 4505 books were left. How many books were there in the library in the beginning of December?