There are 3 shelves.each has 28 books.there is also a stack of more books.there are a total of 85 books how many are in stack?
First, lets see how many books we can keep in the shelves.
Each shelf = 28 books
Number of shelves - 3
Total books = 28 x 3 = 84
We have a total of 85 books, but 84 are in the shelves.
Thus, 85 - 84 = 1 book is in the stack.
We know that there are 3 shelves, and each shelf has 28 books. Therefore, the total number of books on the shelves is 3 * 28 = 84 books.
If there are a total of 85 books and 84 of them are on the shelves, then the remaining book must be in the stack.
Therefore, there is 1 book in the stack.
To find the number of books in the stack, you need to subtract the total number of books on the shelves from the total number of books.
Total number of books on the shelves = 3 shelves * 28 books per shelf
= 84 books
To find the number of books in the stack, subtract the total number of books on the shelves from the total number of books:
Number of books in the stack = Total number of books - Total number of books on the shelves
= 85 books - 84 books
= 1 book
Therefore, there is 1 book in the stack.