Question

Бревно длиной 8 м и 1дм распилили на 2 части так, что одна из них в 2 раза длинее другой. Скольким дециметрам равна длина каждой части бревна? Заранее спасибо

Answer 1

1) 1+2=3(ч.) - всего частей.
2)8м1дм = 81дм
81 : 3 =27 (дм) - меньшая часть бревна
3)27 х 2 = 54(дм) - большая часть бревна
Ответ: 2м 7дм, 5м 4 дм.

Answer 2

Пусть первая часть х, тогда вторая 2*х,составтм уравнение:
х+2х=81
3х=81
х=81:3
х=27-первая часть
2*27=54-вторая часть

Answer 3

Problem Analysis

We are given a log that is 8 meters and 1 decimeter long. The log is cut into two parts in such a way that one part is twice as long as the other. We need to determine the length of each part in decimeters.

Solution

To solve this problem, we can follow these steps: 1. Convert the length of the log from meters and decimeters to decimeters. 2. Set up an equation to represent the relationship between the lengths of the two parts. 3. Solve the equation to find the length of each part.

Let's calculate the length of each part in decimeters.

Step 1: Convert the length of the log to decimeters

The length of the log is 8 meters and 1 decimeter. We need to convert this length to decimeters.

1 meter is equal to 10 decimeters, and 1 decimeter is equal to 1 decimeter. Therefore, the length of the log in decimeters is: - 8 meters = 8 * 10 = 80 decimeters - 1 decimeter = 1 decimeter

So, the total length of the log in decimeters is 80 + 1 = 81 decimeters.

Step 2: Set up an equation

Let's assume the length of one part of the log is x decimeters. According to the problem, the other part is twice as long as the first part. Therefore, the length of the other part is 2x decimeters.

The sum of the lengths of the two parts should be equal to the total length of the log, which is 81 decimeters. So, we can set up the equation:

x + 2x = 81

Step 3: Solve the equation

Simplifying the equation, we get:

3x = 81

Dividing both sides of the equation by 3, we find:

x = 27

So, one part of the log is 27 decimeters long, and the other part is twice as long, which is 2 * 27 = 54 decimeters.

Answer

The length of each part of the log in decimeters is: - One part: 27 decimeters - Other part: 54 decimeters

Please let me know if I can help you with anything else.