Answer:
8 books were in each box
Explanation:
According to the Question,
Assume X is the Number of Books In Each Box.
- We have, 4 boxes With the Same Number of Books In each Box,Thus Total Book in all box is 4X.
- And, 3 books Ryan Already Put In Shelves.
- Now, Total Number Of Book After Cleaning is 35 Books.
Algebraic Expression,
4X + 3 = 35
4X = 35 - 3
4X = 32 ⇔ X=8 books in Each Box.