It is known that the whole school has donated 4320 volumes and 24 classes.

So on average, each class donated 4320/24= 180 (this).

4,320 donations are known, ***24*45= 1080 (person).

So the per capita book donation is 4320/ 1080=4.

Answer: On average, each class donated 180 copies, and each class donated 4 copies.

I hope I can help you. If you have any questions, please ask them in the inquiry. Thank you!