Question

A school library contains 18 bookcases. Each bookcase has 6 shelves and each shelf holds 20 books.

(a) How many books are there in the library when all the bookcases are full? Answer


(b) 40% of all the books is non-fiction, of them has been borrowed. How many non-fiction books have not been borrowed? ​

Answer 1

Answer: 2160 for part a

Explanation:

18*6*20=2160.

By the way for part b I think you made a typo. Because of the 40% books that are non fiction, "of them has been borrowed" gives no extra info about how much percent of the non fiction books has been borrowed.