The questions of the top students' question bank in the fifth grade of primary school last semester ~ ask experts to answer ~
"Every book is priced at 4.8 yuan, and Mr. Zhou's money can just buy 100 copies" means that the teacher brought 480 yuan, and if the store gives a discount, the money will just be spent. Assuming that the discounted price of books is X yuan, then 480/X must be an integer, and it must be greater than 100, which means how much 480 can be divided by.