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80 linear feet of fencing material is used to construct a

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80 linear feet of fencing material is used to construct a [#permalink] New post 07 Apr 2008, 06:44
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80 linear feet of fencing material is used to construct a rectangular enclosure. What is the area of the enclosure?

(1) The length of one particular side of the enclosure is 10 feet.
(2) It is possible to divide the enclosure into three square enclosures of equal size.
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Re: Fencing -DS [#permalink] New post 07 Apr 2008, 07:16
D, each statement stands by itself.

To explain:

1) Since it's a rectangle, one side is 10...meaning the other side is also 10.

(80 - 20)/2 = 30... so you can derive the area if you have length and width.

2) Statement gives: 2x + 2y = 80, x = 3y

2(3y) + 2y = 80
8y = 80
y = 10, x = 30

...you can go from there to derive.
Re: Fencing -DS   [#permalink] 07 Apr 2008, 07:16
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80 linear feet of fencing material is used to construct a

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