Question
A library has a certain number of books. In October, the library bought 315 new books and 213 books were loaned out. In November, the library lost 362 books and loaned out 197 books, after which 3656 books were left. How many books were there in the library in the beginning of October?
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A library has a certain number of books. In October, the library bought 315 new books and 213 books were loaned out. In November, the library lost 362 books and loaned out 197 books, after which 3656 books were left. How many books were there in the library in the beginning of October?