Posted by **Diana** on Thursday, August 9, 2007 at 7:29pm.

A garden area is 30 ft long and 20 ft wide. A path of uniform width

is set around the edge. If the remaining garden area is 400 ft2, what is the width of

the path?

using the quadratic formula

I did the following:

Let x = distance between the inner rectangle and the outer boundry; i.e., x is the width of the border. Then

length is 20-x-x and the width is 20-x-x so (30-x-x)(20-x-x)=400

Solve for x.

Post your work if you get stuck.

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