It is currently 17 Dec 2017, 15:44

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Are x and y both positive?

  post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Senior Manager
Senior Manager
avatar
Joined: 22 Jun 2005
Posts: 360

Kudos [?]: 13 [0], given: 0

Location: London
Are x and y both positive? [#permalink]

Show Tags

New post 21 May 2006, 10:48
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Are x and y both positive?

1, 2x-2y = 1

2, x/y > 1

Please explain if possible

Kudos [?]: 13 [0], given: 0

Director
Director
avatar
Joined: 16 Aug 2005
Posts: 937

Kudos [?]: 31 [0], given: 0

Location: France
 [#permalink]

Show Tags

New post 21 May 2006, 11:23
E

You can plug in some values for x,y both +ve, both -ve and +/e

You can use x=-1/2, y=-1; x=1, y=1/2, OR x=1/4, y=-1/4 for (1)
and x=-1/2, y=-1; x=1, y=1/2 for (2)

Kudos [?]: 31 [0], given: 0

VP
VP
avatar
Joined: 21 Sep 2003
Posts: 1057

Kudos [?]: 82 [0], given: 0

Location: USA
 [#permalink]

Show Tags

New post 21 May 2006, 12:29
From 1) x = y + 0.5 (x>y)
INSUFF because
y = -1 , x = -0.5 NO
y = 1, x = 1.5 YES

From (2)
x/y > 1
x & y --> both +ve or both -ve

x = -4, y = -3 (x<y)
x = 4, y = 3 (x>y)
INSUFF.

Combining (1) & (2)
x & y have to be positive to satisfy both conditions. Hence C.
_________________

"To dream anything that you want to dream, that is the beauty of the human mind. To do anything that you want to do, that is the strength of the human will. To trust yourself, to test your limits, that is the courage to succeed."

- Bernard Edmonds

Kudos [?]: 82 [0], given: 0

SVP
SVP
User avatar
Joined: 01 May 2006
Posts: 1794

Kudos [?]: 171 [0], given: 0

 [#permalink]

Show Tags

New post 21 May 2006, 12:59
(C) as well. By the same way as giddi.

Kudos [?]: 171 [0], given: 0

GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jul 2004
Posts: 5032

Kudos [?]: 457 [0], given: 0

Location: Singapore
 [#permalink]

Show Tags

New post 21 May 2006, 21:27
St1:
(x-y) = 1/2
Can be both positive: x-y = 1 - 1/2, or both negative: x-y = -1/2-(-1)
Insufficient.

St2:
x>y
Can be both positive or negative. Insufficient.

Using St1 and St2,
We know both must be positive as the second case cannot exist. Sufficient.

Ans C

Kudos [?]: 457 [0], given: 0

Director
Director
avatar
Joined: 26 Sep 2005
Posts: 567

Kudos [?]: 26 [0], given: 0

Location: Munich,Germany
 [#permalink]

Show Tags

New post 15 Jun 2006, 08:03
E.

stmt 1,

x=4, Y=3.5 YES
X=-3 Y=3.5 NO

stmt 2, clearly insuff

combining,

x=4, y=3.5 YES
X=-3.5, Y =-4 NO

hence E.

Kudos [?]: 26 [0], given: 0

Senior Manager
Senior Manager
avatar
Joined: 11 May 2006
Posts: 258

Kudos [?]: 26 [0], given: 0

 [#permalink]

Show Tags

New post 15 Jun 2006, 08:49

Kudos [?]: 26 [0], given: 0

  [#permalink] 15 Jun 2006, 08:49
Display posts from previous: Sort by

Are x and y both positive?

  post reply Question banks Downloads My Bookmarks Reviews Important topics  


cron

GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.