Read and answer each question:
The library is being relocated. The librarians are busy organizing the books.
1. Three boxes filled with fiction books and two boxes filled with reference books
were just delivered. If each box is filled with 120 books, how many fiction books
are there?
2. From the boxes just delivered, a librarian takes out 40 reference books to put on
the shelf. Then, she takes out another 65 reference books and leave them at the
checkout counter. How many reference books are left in the boxes?
3. There were 445 non-fiction books but 83 went missing and 45 were transferred to
another library. How many non-fiction books are left?
4. According to the library system, there are 238 new patrons, 145 inactive patrons
and 673 active patrons. How many patrons are there in total in the library
system?