bob has 3 bookshelves that hold a total of 27 books. he adds a fourth shelf and now has 36 books. if he adds 2 more shelves ,how many books can he have in total?
Based on the given information, each shelf can hold 9 books. (27/3 = 9) That means 2 additional shelves will hold 18 books. Add 18 to 36 to find the total, which is 54. Hope that helped you.