Question

На тёмное книжных полках стояли книги. На первой полке книг стояло в 2 раза меньше, чем на второй, а на третьей на 4 меньше чем на первой. Сколько книг стояло на каждой из полок, если всего в ШКАФУ было 88 книг? Помогите решить пожалуйста

Answer 1

х книг на первой полке, 2х на второй полке, (х-4) книг на третьей, тогда

х+2х+(х-4)=88

4х-4=88

4х=92

х=23 книги на первой полке

2х=2*23=46 книг на второй полке

х-4=23-4=19 книг на третьей полке

Answer 2

Problem Analysis

We are given that there are three shelves on a bookcase, and the number of books on each shelf is related to the number of books on the other shelves. We need to determine the number of books on each shelf given that there are a total of 88 books in the bookcase.

Solution

Let's assume the number of books on the first shelf is x. According to the problem, the number of books on the second shelf is twice the number on the first shelf, and the number of books on the third shelf is four times less than the number on the first shelf.

Based on this information, we can set up the following equations:

1. Number of books on the second shelf = 2 * (number of books on the first shelf) 2. Number of books on the third shelf = (number of books on the first shelf) - 4 * (number of books on the first shelf)

We know that the total number of books in the bookcase is 88. Therefore, we can write the equation:

x + 2x + (x - 4x) = 88

Simplifying the equation:

-2x = 88

Solving for x:

x = -44

Since the number of books cannot be negative, we can conclude that there is an error in the problem statement or the given information.

Please provide the correct information or clarify the problem so that we can assist you further.