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14 Aug 2017, 07:58
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C
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Difficulty:
15%
(low)
Question Stats:
80% (01:38) correct
20%
(01:49)
wrong
based on 108
sessions
History
Date
Time
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Not Attempted Yet
If x - y < 0, what is the value of x + y?
(1) x^2 – x – 2 = 0
(2) y^2 - 2y + 1 = 0
(1) x^2 – x – 2 = 0
(2) y^2 - 2y + 1 = 0
14 Aug 2017, 08:06
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1) gives two values for x.. (x-2)*(x+1)=0. x is either 2 or - 1
2) gives (y-1)^2=0. y=1
x-y is either 1 or - 2.
If x-y<0 then x=-1 and y=1, that gives
x+y=0
Sent from my ONE A2003 using GMAT Club Forum mobile app
2) gives (y-1)^2=0. y=1
x-y is either 1 or - 2.
If x-y<0 then x=-1 and y=1, that gives
x+y=0
Sent from my ONE A2003 using GMAT Club Forum mobile app
gauravraos
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Schools: Rotman '19 NTU '18 HEC Montreal '20 XLRI GM"18 HKUST '19 (D) IIMB SMU '18 Schulich Sept 18 Intake Queen's 19 NUS '20 Simon '21 Madison '21 (M) ISB '20 (I) BYU'21 (A)
GMAT 1: 690 Q48 V35
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14 Aug 2017, 08:16
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answer to this question is C
1. Solving 1 you get x = -1 or 2
2. Solving Y you get y=1
combine 1&2
x+y = 0 since x<y
1. Solving 1 you get x = -1 or 2
2. Solving Y you get y=1
combine 1&2
x+y = 0 since x<y
