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

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Math Expert
Joined: 02 Sep 2009
Posts: 60555
A certain rectangular window is three times as long as it is wide. If  [#permalink]

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28 Feb 2016, 11:58
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91% (01:12) correct 9% (01:43) wrong based on 51 sessions

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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

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Joined: 15 Feb 2016
Posts: 58
GMAT 1: 710 Q48 V40
Re: A certain rectangular window is three times as long as it is wide. If  [#permalink]

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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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Joined: 25 Dec 2012
Posts: 116
A certain rectangular window is three times as long as it is wide. If  [#permalink]

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

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