The twine was cut into 4 pieces. The first part is larger than the second by 1.2 m and less than the third by 3.1 m.

The twine was cut into 4 pieces. The first part is larger than the second by 1.2 m and less than the third by 3.1 m. The second part is 1.4 m less than the fourth. Find the length of the twine if the length of the fourth part is 5.3.

Let’s calculate the length of the second part.
5.3 – 1.4 = 3.9 m.
Let’s calculate the length of the first part.
3.9 + 1.2 = 5.1 m.
Let’s calculate the length of the third part.
5.1 + 3.1 = 8.2.
Let’s calculate the length of the twine, knowing that the length of the fourth part is 5.3 meters.
3.9 + 5.1 + 8.2 + 5.3 = 22.5 meters.
Answer: 22.5 meters.