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A power station is located

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A power station is located [#permalink] New post 01 Feb 2017, 08:12
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Question Stats:

70% (00:47) correct 30% (00:53) wrong based on 30 sessions


A power station is located on the boundary of a square region that measures 10 miles on each side. Three substations are located inside the square region

Quantity A
Quantity B
The sum of the distances from the power station to each of the substations
30 miles


A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
[Reveal] Spoiler: OA

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Re: A power station is located [#permalink] New post 06 Feb 2017, 10:09
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Explanation

Let us examine an extreme case. Observe the figure below.

Image

Lets assume that the power plant in the lower left corner. If the substations are in the orange section the square the sum of distance is greater than 30.

If the substation are in the white region then sum of the distance of the substation from the power plant is less 30.

Hence option D is correct.


[Reveal] Spoiler: Img
Attachment:
di.jpg
di.jpg [ 6.8 KiB | Viewed 7434 times ]

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Re: A power station is located   [#permalink] 06 Feb 2017, 10:09
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A power station is located

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