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# If l and w represent the length and width, respectively, of

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Math Expert
Joined: 02 Sep 2009
Posts: 43828
If l and w represent the length and width, respectively, of [#permalink]

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24 Dec 2013, 02:52
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The Official Guide For GMAT® Quantitative Review, 2ND Edition

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If l and w represent the length and width, respectively, of the rectangle above, what is the perimeter?

(1) 2l + w = 40
(2) l + w= 25

Data Sufficiency
Question: 4
Category: Geometry Perimeter
Page: 153
Difficulty: 550

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Math Expert
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Posts: 43828
Re: If l and w represent the length and width, respectively, of [#permalink]

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24 Dec 2013, 02:53
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SOLUTION

If l and w represent the length and width, respectively, of the rectangle above, what is the perimeter?

The perimeter is 2(l+w).

(1) 2l + w = 40. Not sufficient.

(2) l + w= 25 --> $$perimeter=2(l+w)=50$$. Sufficient.

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Joined: 28 Sep 2013
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Location: India
Re: If l and w represent the length and width, respectively, of [#permalink]

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24 Dec 2013, 21:22
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Straight B.

For Perimeter we need 2(l+b),so if we know l+b its sufficient..
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Joined: 21 Mar 2011
Posts: 108
Concentration: Strategy, Technology
GMAT 1: 590 Q45 V27
Re: If l and w represent the length and width, respectively, of [#permalink]

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25 Dec 2013, 10:00
Answer is B straightaway.

Explanation: The perimeter of a rectangle can be found by 2(l+w). So, if we know (l+w) or l and w separately, the perimeter can be found. Hence B.
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Re: If l and w represent the length and width, respectively, of [#permalink]

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26 Mar 2017, 10:03
Hello from the GMAT Club BumpBot!

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Re: If l and w represent the length and width, respectively, of   [#permalink] 26 Mar 2017, 10:03
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# If l and w represent the length and width, respectively, of

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