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# Does 7x = 14 + 2x? (1) -3x is greater than or equal to -9. (2) 2x is

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Joined: 02 Sep 2009
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Does 7x = 14 + 2x? (1) -3x is greater than or equal to -9. (2) 2x is  [#permalink]

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19 Nov 2019, 02:06
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Difficulty:

55% (hard)

Question Stats:

58% (01:37) correct 42% (01:50) wrong based on 33 sessions

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Does 7x = 14 + 2x?

(1) -3x is greater than or equal to -9.
(2) 2x is greater than or equal to 6.

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Math Expert
Joined: 02 Aug 2009
Posts: 8340
Does 7x = 14 + 2x? (1) -3x is greater than or equal to -9. (2) 2x is  [#permalink]

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19 Nov 2019, 03:16
Does 7x = 14 + 2x or $$5x=14$$ or $$x=\frac{14}{5}=2.8$$?

(1) -3x is greater than or equal to -9......$$-3x\geq{-9}.......3x\leq{9}.......x\leq{3}$$. Can be 2.8 or 1 or 2....Insuff

(2) 2x is greater than or equal to 6.........$$2x\geq{6}........x\geq{3}$$. This means $$x\neq{2.8}$$......Suff

B
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Does 7x = 14 + 2x? (1) -3x is greater than or equal to -9. (2) 2x is  [#permalink]

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19 Nov 2019, 03:55
Quote:
Does 7x = 14 + 2x?

(1) -3x is greater than or equal to -9.
(2) 2x is greater than or equal to 6.

7x=14+2x…5x=14…x=2.8?

(1) -3x is greater than or equal to -9. sufic
-3x≥-9…x≤3

(2) 2x is greater than or equal to 6. sufic

Ans (B)
Does 7x = 14 + 2x? (1) -3x is greater than or equal to -9. (2) 2x is   [#permalink] 19 Nov 2019, 03:55
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