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# Is b > 4? (1) 2b^2 = 50 (2) 3b - 2 = -17

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Math Expert
Joined: 02 Sep 2009
Posts: 51185
Is b > 4? (1) 2b^2 = 50 (2) 3b - 2 = -17  [#permalink]

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31 Oct 2017, 22:10
00:00

Difficulty:

25% (medium)

Question Stats:

91% (00:34) correct 9% (00:51) wrong based on 47 sessions

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Is b > 4?

(1) 2b^2 = 50

(2) 3b - 2 = -17

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Re: Is b > 4? (1) 2b^2 = 50 (2) 3b - 2 = -17  [#permalink]

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31 Oct 2017, 22:28
2
Bunuel wrote:
Is b > 4?

(1) 2b^2 = 50

(2) 3b - 2 = -17

(1) 2b^2 = 50
=> b^2 = 25
=> b = 5 or -5
Not sufficient

(2) 3b - 2 = -17
=> 3b = -15
=> b = -5
Sufficient

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Re: Is b > 4? (1) 2b^2 = 50 (2) 3b - 2 = -17 &nbs [#permalink] 31 Oct 2017, 22:28
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