Question

Бревно длиной 8 м 1 дм распилили на 2 части так, что одна из них в 2 раза длиннее другой. Скольким децеметрам равна длина каждой части бревна?

Answer 1

8м 1дм=81 м
перевод нам облегчит задачу.
и т.к. 1 не делится на 2 так, что бы было полное число мы переведем в см.
и так будет 810 см.
810/3=270см
270*2= 540см
ответ: 540 и 270 см.

Answer 2

Problem Analysis

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

Solution

Let's first convert the length of the log into decimeters.

1 meter is equal to 10 decimeters, and 1 decimeter is equal to 10 centimeters. Therefore, 1 meter is equal to 100 centimeters.

So, the length of the log in decimeters is: 8 meters * 10 decimeters/meter + 1 decimeter = 81 decimeters.

Let's assume the length of the shorter part is x decimeters. Since the longer part is twice as long as the shorter part, the length of the longer part is 2x decimeters.

The sum of the lengths of the two parts is equal to the length of the log: x decimeters + 2x decimeters = 81 decimeters.

Simplifying the equation, we get: 3x = 81.

Dividing both sides of the equation by 3, we find: x = 27.

Therefore, the length of the shorter part is 27 decimeters, and the length of the longer part is twice that, which is 54 decimeters.

Answer

The length of each part of the log is 27 decimeters and 54 decimeters.