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# 2 -5x < -14y 5x > 14y so 2.5x >7y and so 3x>7y

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Manager
Joined: 01 Jun 2006
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2 -5x < -14y 5x > 14y so 2.5x >7y and so 3x>7y [#permalink]

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04 Oct 2006, 08:57
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2 -5x < -14y

5x > 14y so 2.5x >7y and so 3x>7y.

Last edited by rbcola on 29 Jun 2008, 07:40, edited 1 time in total.
Senior Manager
Joined: 30 Aug 2006
Posts: 374
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04 Oct 2006, 09:24
I) INSUFF - don't know anything about x or y
II) -5x < -14y ( times through by -1)
5x > 14y (div by 2)
2.5x > 7y therefore 3x > 7y - SUFF

Director
Joined: 06 Sep 2006
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04 Oct 2006, 09:39
If x and y are positive, is 3x > 7y?
(1) x > y + 4
(2) -5x < -14y

x > 7/3 y
x > 2.11* y

1) Insuff.

2) 5x > 14y
x > 2.8 * y

B.
Director
Joined: 17 Jul 2006
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04 Oct 2006, 12:29
1 not sufficient.

2 -5x < -14y

5x > 14y so 2.5x >7y and so 3x>7y.

Director
Joined: 23 Jun 2005
Posts: 841
GMAT 1: 740 Q48 V42
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Kudos [?]: 76 [0], given: 1

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04 Oct 2006, 14:58
B
Statement A:
x>y+4
3x>3y+12
Insufficient

Statement B:
-5x<-14y
x>14y/5
x>2.8Y
3x>8.4y

Sufficient
Manager
Joined: 01 Jun 2006
Posts: 80
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04 Oct 2006, 15:52
right on guys. B is the correct answer
SVP
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04 Oct 2006, 16:29
If x and y are positive, is 3x > 7y?
(1) x > y + 4
(2) -5x < -14y

from one

x-y>4....insuff they could be any thing

from two

5x>14y stem is 6x>14y

if 5x>14y thus sure 6x is

04 Oct 2006, 16:29
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