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27 Feb 2018, 21:16
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
80% (01:10) correct
20%
(01:13)
wrong
based on 161
sessions
History
Date
Time
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Not Attempted Yet
gmatexam439
27 Feb 2018, 21:52
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Bunuel
Is x > 9?
(1) x^2 + 3x = 28
(2) 9x = 5x − 28
(1) x^2 + 3x = 28
(2) 9x = 5x − 28
Statement 1:
(x+7)(x-4)=0
x=-7 / 4 --Sufficient
Statement 2:
4x=-28
x=-7 --Sufficient
IMO answer should be "D"
Pradeeps0013
Joined: 09 Jan 2014
Last visit: 15 Jan 2019
Posts: 13
Given Kudos: 45
Location: India
Schools: ISB '20 IIMB EPGP"20 IIMC PGPEX"20 XLRI"20
GMAT 1: 690 Q48 V37
GMAT 2: 730 Q50 V39
GPA: 4
WE:General Management (Manufacturing)
27 Feb 2018, 22:06
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Bunuel
Is x > 9?
(1) x^2 + 3x = 28
(2) 9x = 5x − 28
(1) x^2 + 3x = 28
(2) 9x = 5x − 28
Is x> 9
1)
x^2 + 3x = 28
x^2+3x-28 = 0
x^2+7x-4x-28=0
(x+7)(x-4)=0
x = -7 or 4
Both the values of x less than 9, hence statement 1 is sufficient.
2)
9x = 5x - 28
4x = -28
x = -7
-7 < 9, Hence statement 2 is sufficient.
Option D should be the answer.
