Question

Петя расставил книги поровну на 12 полках ,а потом переставил их,тоже поровну ,на 8 полок. Сколько книг было у Пети ,если известно ,что их было больше 100,но меньше 140

Answer 1

У Пети было 120 книг

Answer 2

Calculating the Number of Books

To calculate the number of books Petya had, we can use the information provided in the question and the search results.

Petya initially placed the books evenly on 12 shelves and then rearranged them evenly on 8 shelves. We know that the number of books is more than 100 but less than 140.

Let's calculate the number of books Petya had.

Given: - Initially, the books were placed evenly on 12 shelves. - Then, the books were rearranged evenly on 8 shelves. - The number of books is more than 100 but less than 140.

Solution:

1. Calculate the number of books per shelf initially: - Number of books per shelf = Total number of books / Number of shelves - Number of books per shelf initially = Total number of books / 12

2. Calculate the number of books per shelf after rearranging: - Number of books per shelf after rearranging = Total number of books / 8

3. Set up the inequality based on the given range (more than 100 but less than 140): - 100 < Total number of books < 140

Let's calculate the number of books using the provided information and the above steps.

Calculation:

1. Number of books per shelf initially: - Number of books per shelf initially = Total number of books / 12 - Number of books per shelf initially = Total number of books / 12 = 100

2. Number of books per shelf after rearranging: - Number of books per shelf after rearranging = Total number of books / 8 - Number of books per shelf after rearranging = Total number of books / 8 = 100

3. Set up the inequality: - 100 < Total number of books < 140

Based on the given information and calculations, the number of books Petya had is 120.