Question

peter arranges a total of 12 books on 3 shelves in the library. he puts the same number of books on each shelf. which picture shows the books on the shelves?

Explanation:

Step1: Calculate books per shelf

Total books = 12, shelves = 3. So books per shelf = \( \frac{12}{3} = 4 \).

Step2: Check each picture

• First picture: Shelves have different counts (e.g., top shelf has 3, next 3, etc. Not 4 each).
• Second picture: Shelves have different counts (top has 7, bottom has 4? No, inconsistent).
• Third picture: Each shelf has 4 books (check each shelf: top, middle, bottom—all 4).
• Fourth picture: Shelves have more than 4? Wait, no—wait, third picture: let's recheck. Wait, third picture: each shelf (3 shelves? Wait, the problem says 3 shelves. Wait, first image: 4 shelves? Wait, no, the problem says 3 shelves. Wait, maybe I miscounted shelves. Let's re-express:

Wait, the problem: 3 shelves. So each shelf must have 4 books. Let's check the images:

• First image: 4 shelves (rows), so not 3. Eliminate.
• Second image: 2 shelves (rows), eliminate.
• Third image: 3 shelves (rows), each with 4 books? Wait, top shelf: 4, middle: 4, bottom: 4? Wait, no, third image: top shelf has 4, middle 4, bottom 4? Wait, the third image: let's count. Top: 4, middle: 4, bottom: 4? Wait, no, maybe I messed up. Wait, the fourth image: 3 shelves, each with 5? No. Wait, wait, the correct approach: 12 books, 3 shelves, so 4 per shelf. So find the image with 3 shelves (rows) each having 4 books.

Wait, the third image (third from left) has 3 shelves (rows), each with 4 books. Let's confirm:

• Third image: top shelf: 4 books, middle shelf: 4, bottom shelf: 4. Yes. So that's the one.

Answer:

The Third Graph (the third picture from the left)