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A certain rectangular window is three times as long as it is wide. If

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A certain rectangular window is three times as long as it is wide. If  [#permalink]

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New post 28 Feb 2016, 11:58
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A
B
C
D
E

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  5% (low)

Question Stats:

91% (01:12) correct 9% (01:43) wrong based on 51 sessions

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Re: A certain rectangular window is three times as long as it is wide. If  [#permalink]

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New post 28 Feb 2016, 12:43
Bunuel wrote:
A certain rectangular window is three times as long as it is wide. If its perimeter is 28 feet, what are its dimensions in terms of length by width?

A. 12 by 2
B. 11 by 3
C. 10.5 by 3.5
D. 10 by 4
E. 9 by 3


2x+2y=28
x+y=14
x+3x=14
4x=14
x=3.5
only one option
Answer C
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A certain rectangular window is three times as long as it is wide. If  [#permalink]

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New post 28 Feb 2016, 12:50
Bunuel wrote:
A certain rectangular window is three times as long as it is wide. If its perimeter is 28 feet, what are its dimensions in terms of length by width?

A. 12 by 2
B. 11 by 3
C. 10.5 by 3.5
D. 10 by 4
E. 9 by 3


Since given length is 3 times the width, we can strike out A,B and D.

C and E are remaining.

Lets take E and find the perimeter. 2(9+3) = 24

Hence C
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A certain rectangular window is three times as long as it is wide. If   [#permalink] 28 Feb 2016, 12:50
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