Question

Від колоди відпиляли частину завдовжки 2 м, що стоновить 1, 4 довжини всієї колоди. Яка була довжина колоди? яка довна частини, що залишилася

Answer 1

Оскільки відпиляли 2 м і нам дано, що ця довжина становить 1,4 довжини всієї колоди, то ми можемо найти довжину колоди:
2м*1,4=2,8м
Тепер аби знайти те, що залишилось, віднімаємо від всієї колоди те, що відпиляли:
2,8-2=0,8м
В: 2,8 м, 0,8 м.

Answer 2

Problem Analysis

We are given that a part of a log was cut off, and the length of this part is 2 meters, which is 1.4 times the length of the remaining log. We need to find the length of the entire log and the length of the remaining part.

Solution

Let's assume the length of the entire log is x meters. According to the given information, the length of the cut-off part is 2 meters, which is 1.4 times the length of the remaining log.

We can set up the following equation to represent the relationship between the lengths:

2 = 1.4 * (x - 2)

To find the length of the entire log, we can solve this equation for x.

Calculation

Let's solve the equation:

2 = 1.4 * (x - 2)

Expanding the equation:

2 = 1.4x - 2.8

Adding 2.8 to both sides:

2 + 2.8 = 1.4x

Simplifying:

4.8 = 1.4x

Dividing both sides by 1.4:

x = 4.8 / 1.4

Calculating:

x ≈ 3.43

Therefore, the length of the entire log is approximately 3.43 meters.

To find the length of the remaining part, we can subtract the length of the cut-off part from the length of the entire log:

Length of remaining part = Length of entire log - Length of cut-off part

Length of remaining part = 3.43 - 2

Calculating:

Length of remaining part ≈ 1.43 meters

Therefore, the length of the remaining part is approximately 1.43 meters.

Answer

The length of the entire log is approximately 3.43 meters, and the length of the remaining part is approximately 1.43 meters.