The Terrain

Algebra Level 1

The brothers Luiz and Lucio bought a land surrounded by a wall of 340 meters340 \text{ meters} . They built an inner wall to divide the land into two parts. Now, the part of Luiz is surrounded by a wall of 260 meters,260 \text{ meters} , and the part of Lucio by a wall of 240 meters240 \text{ meters} . What is the length of the inner wall?

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