Answer: The number of books he donated = 48
Step-by-step explanation:
Given : Fred had 264 books in his personal library.
He donated [tex]\dfrac{2}{11}[/tex] of these books to the public library.
Then, the number of books he donated is given by :-
[tex]\dfrac{2}{11}\times264\\\\=48[/tex]
Therefore, the number of books he donated = 48