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Two word problems (geometry), one on peremeter and the other one about a triangle.

Two word problems I think I solved, but I do not have an example.

If the width of paper is x inches and its length is 3 more than twice the width, express the perimeter as an expression in x.

 

A plot of land is in the shape of a triangle.  If one side is x meters, a second side is 2x-3 meters, and a third side is 3x-5 meters, express the perimeter of the lot as an expression in x.

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1 Answer

Since the width is x, the length is 3 more than twice the width, or 3+2x

The perimeter is 2w + 2l = 2(x) + 2(3 + 2x) = (I'll leave for you to simplify)

For the triangle, the perimeter = side 1 + side 2 + side 3.
Therefore, x + (2x - 3) + (3x -5) = (I'll leave for you to simplify)