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07 Sep 2017, 23:41
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A
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:
71% (00:48) correct
29%
(01:14)
wrong
based on 56
sessions
History
Date
Time
Result
Not Attempted Yet
Luckisnoexcuse
Current Student
Joined: 18 Aug 2016
Last visit: 31 Mar 2026
Posts: 513
Own Kudos:
Given Kudos: 198
Concentration: Strategy, Technology
Schools: Kenan-Flagler '20 (M)
GMAT 1: 630 Q47 V29
GMAT 2: 740 Q51 V38
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07 Sep 2017, 23:45
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Bunuel
(1)subtracting c from both sides..sufficient
(2)we dont know the sign of c... not sufficient
A
Mo2men
Joined: 26 Mar 2013
Last visit: 09 May 2023
Posts: 2,426
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Given Kudos: 641
Concentration: Operations, Strategy
Schools: Erasmus (II)
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09 Sep 2017, 03:05
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Bunuel
1) x + c > y + c
Cancel out c from both sides
x > y
Sufficient
(2) xc > yc
xc - yc > 0
c (x - y) > 0.............Two multiplied numbers to be positive is either both positive or both negative as follows:
x - y > 0... x > y & c > 0...Answer is yes
or
x - y < 0 ....x < y & c < 0...Answer is No
Insufficient
Answer: A
