The Terrain

Algebra Level 1

The brothers Luiz and Lucio bought a land surrounded by a wall of 340 meters 340 \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 meters 240 \text{ meters} . What is the length of the inner wall?


The answer is 80.

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2 solutions

let the length of the wall be x, then

(240 -x) + (260 -x) = 340,

x = 80

Nguyen Thanh Long
Jun 16, 2014

L e n g t h ( I n n e r W a l l ) = ( 260 + 240 ) 340 2 = 80 Length(InnerWall)=\frac{(260+240)-340}{2}=\boxed{80}

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