a large pile of books is divided into four equal sized stacks how many books are in total if ther are 156 books

If a large pile of books is divided into four equal-sized stacks, it means that each stack would have the same number of books.

Let the number of books in each stack be represented by "x".

Since the total number of books is given as 156, we can set up the following equation:
4x = 156

Divide both sides of the equation by 4:
x = 156/4

Calculate the value of x:
x = 39

Therefore, each stack would have 39 books.
To find the total number of books, we multiply the number of books in each stack by the number of stacks:
Total number of books = 39 books (in each stack) * 4 stacks

Total number of books = 156 books.