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21 Feb 2018, 21:51
Kudos
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
73% (01:13) correct
27%
(01:05)
wrong
based on 203
sessions
History
Date
Time
Result
Not Attempted Yet
(NOTE: not drawn to scale)
Is a > 85?
(1) b > 75
(2) c > 95
Attachment:
angles.png [ 5.63 KiB | Viewed 3777 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
21 Feb 2018, 23:07
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Bunuel
(1) b > 75
We know that a+b+c = 180, b>75 ==> a+c > 105
Not Suff
(2) c > 95
We know that a+b+c = 180, c>95 ==> a+b > 85
So a cannot be greater than 85
Suff
Hence B
22 Feb 2018, 14:10
Kudos
Bookmarks
from the question info: a+b+c = 180 (sum of all angles in a triangle = 180)
st 1
b >75 => a+c <= 105 => not sufficient to answer a > 85
st 2
c > 95 => a+b <= 85 => sufficient to answer that a < 85 , hence IMO - B
st 1
b >75 => a+c <= 105 => not sufficient to answer a > 85
st 2
c > 95 => a+b <= 85 => sufficient to answer that a < 85 , hence IMO - B
