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

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New post 26 Jul 2012, 04:34
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A
B
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D
E

Difficulty:

  45% (medium)

Question Stats:

62% (01:33) correct 38% (01:25) wrong based on 177 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
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GMAT 1: 640 Q50 V26
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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, 06:50
1
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 5991 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
Intern
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Schools: Schulich '16
GMAT 1: 610 Q49 V26
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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, 08:49
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, 03:17
1
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
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A square garden is surrounded by a 2 feet wide walkway on  [#permalink]

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New post 28 Oct 2018, 14:09

Solution



Given:
    • 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.
    • Garden is broadened by increasing side of the garden by 5 units.

To find:
    • Area of the garden if the garden is broadened by increasing side of the garden by 5 units.

Approach and Working

    • Let the side of the garden is x feet.
      o Hence, the side of garden +walkway= l+4 feet
      • \((x+4)^2\)= 225
        o x= 11
      • x+5= 16
      • \((x+5)^2\)= 256 feet.

Correct answer: Option D
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A square garden is surrounded by a 2 feet wide walkway on &nbs [#permalink] 28 Oct 2018, 14:09
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