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17 Sep 2018, 21:50
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C
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Difficulty:
65%
(hard)
Question Stats:
54% (02:13) correct
46%
(02:21)
wrong
based on 90
sessions
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Time
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Not Attempted Yet
If MN = 10, what is the perimeter of the rectangle?
(1) The area of the rectangle is 50
(2) NO = LM = 6
Attachment:
image010.jpg [ 4.32 KiB | Viewed 2279 times ]
Pure algebraic questions like this one are no longer part of the GMAT Data Sufficiency syllabus.
For relevant Data Sufficiency questions, please check the Data Sufficiency forum:
Data Sufficiency Forum
Data Sufficiency Forum
17 Sep 2018, 23:30
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Bunuel
Individually statements rae not suficient to find out the perimter of the given rectangle.
Combined, Please refer the affixed diagram,
Perimeter= 12+x+12+x+y+y=24+2(x+y)
We need to find out the value of x+y.
From the diagram,
a)\(x^2+y^2=10^2\)
b) (12+x)*y=50
We have two equations and two variables.Hence, the value of x and y can be determined.(only positive values are acceptable)
Excact computation is not required.
Sufficient to determine (x+y), hence the perimeter.
Ans. (C)
Attachments
Rectangle perimeter.jpg [ 24.07 KiB | Viewed 2157 times ]
ShankSouljaBoi
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25 Sep 2018, 21:53
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PKN
Exact computation is not required even though the degree of freedom is two, we can only accept the positive real values. What if we get irrationals or non terminating decimals ? I always end up computing in DS questions. Is there a way we can generalize ?
