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A square garden is surrounded by a 2 feet wide walkway on

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Intern
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Joined: 24 Jul 2012
Posts: 13

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Schools: Schulich '16
GMAT 1: 610 Q49 V26
WE: Consulting (Consulting)
A square garden is surrounded by a 2 feet wide walkway on [#permalink]

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New post 26 Jul 2012, 05:34
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A
B
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D
E

Difficulty:

  45% (medium)

Question Stats:

58% (01:37) correct 42% (01:14) wrong based on 147 sessions

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A square garden is surrounded by a 2 feet wide walkway on each side.The area of the garden and the walkway is 225 square feet.If the garden is broadened by increasing side of the garden by 5 units then what will be the area of the garden?

A. 121
B. 169
C. 225
D. 256
E. 324
[Reveal] Spoiler: OA

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Kellogg MMM ThreadMaster
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Location: India
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Re: A square garden is surrounded by a 2 feet wide walkway [#permalink]

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New post 26 Jul 2012, 07:50
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Hi,

Area of garden & path = 225
Side = \(\sqrt{225}\) = 15 ft

As per the below diagram,
Attachment:
square.jpg
square.jpg [ 11.57 KiB | Viewed 3576 times ]

Side of garden = 11 ft

When sides of garden are increased by 5 ft,
new dimension = 11+5 = 16 ft
Area = \(16^2\) = 256

Answer (D)

Regards

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Intern
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Joined: 24 Jul 2012
Posts: 13

Kudos [?]: 50 [0], given: 7

Schools: Schulich '16
GMAT 1: 610 Q49 V26
WE: Consulting (Consulting)
Re: A square garden is surrounded by a 2 feet wide walkway [#permalink]

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New post 26 Jul 2012, 09:49
Thanks.

I missed to take 2 feet on both sides. so took the side of the garden as 15-2 =13.

so 13 +5 after increasing and the area of garden as 18^2 = 324.

Have to be careful :roll: . Thanks for the solution.

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Re: A square garden is surrounded by a 2 feet wide walkway on [#permalink]

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New post 27 May 2017, 01:16
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Re: A square garden is surrounded by a 2 feet wide walkway on [#permalink]

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New post 27 May 2017, 04:17
Let 'x' be the side of garden excluding the walkway.
Thus side of garden including the walkway = (x+4) (since its 2 feet on both sides)

Area = (x+4)^2 = 225 Or (x+4) = 15 Or x = 11

Right now side of square garden is 11 feet. New side = 11+5 = 16 feet
New Area = 16*16 = 256 sq feet

Hence D answer

Kudos [?]: 158 [0], given: 270

Re: A square garden is surrounded by a 2 feet wide walkway on   [#permalink] 27 May 2017, 04:17
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