After the teacher takes away the books numbered 57 to 83, there will be a total of 497 - (83 - 57 + 1) books left in the library.
Simplifying the equation, we get 497 - (83 - 57 + 1) = 497 - 26 = 471 books.
Therefore, there are now 471 books in the library.
There are 497 books in a school library. They are numbered from 1 to 497.
A teacher takes away all the books numbered 57 to 83 to distribute in her class.
How many books are there in the library now?
1 answer