GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 17 Jul 2018, 18:22

### 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

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

# Is x > y? (1) x = y + 2 (2) x/2 = y -1

Author Message
TAGS:

### Hide Tags

Retired Moderator
Status: 2000 posts! I don't know whether I should feel great or sad about it! LOL
Joined: 04 Oct 2009
Posts: 1379
Location: Peru
Schools: Harvard, Stanford, Wharton, MIT & HKS (Government)
WE 1: Economic research
WE 2: Banking
WE 3: Government: Foreign Trade and SMEs
Is x > y? (1) x = y + 2 (2) x/2 = y -1 [#permalink]

### Show Tags

01 Sep 2010, 18:13
1
1
00:00

Difficulty:

25% (medium)

Question Stats:

71% (00:55) correct 29% (01:02) wrong based on 70 sessions

### HideShow timer Statistics

Is x > y?

(1) x = y + 2
(2) x/2 = y -1

This is easy, but I want to know if you have a method to assign values in the case of clue #2. I want to answer this type of questions as fast as I can. Thanks!

_________________

"Life’s battle doesn’t always go to stronger or faster men; but sooner or later the man who wins is the one who thinks he can."

My Integrated Reasoning Logbook / Diary: http://gmatclub.com/forum/my-ir-logbook-diary-133264.html

GMAT Club Premium Membership - big benefits and savings

Math Expert
Joined: 02 Sep 2009
Posts: 47037
Re: Is x > y? (1) x = y + 2 (2) x/2 = y -1 [#permalink]

### Show Tags

01 Sep 2010, 18:35
1
metallicafan wrote:
This is easy, but I want to know if you have a method to assign values in the case of clue #2. I want to answer this type of questions as fast as I can. Thanks!

Is x>y?

(1) x = y + 2
(2) x/2 = y -1

Is $$x>y$$?

(1) $$x=y+2$$ --> if you just read what is written you'll get "$$x$$ is 2 more than $$y$$", so $$x$$ is more than $$y$$. Sufficient.

Or you can substitute $$x$$ in the question: is $$x>y$$? --> question becomes: is $$y+2>y$$? is $$2>0$$? YES, 2 is more than 0. So the answer to the question is YES. Sufficient.

(2) $$\frac{x}{2}=y-1$$ --> $$x=2y-2$$ --> substitute $$x$$ in the question: is $$x>y$$? --> question becomes: is $$2y-2>y$$? is $$y>2$$? We don't know that, hence this statement is not sufficient.

As for number plugging:
On DS questions when plugging numbers, goal is to prove that the statement is not sufficient. So we should try to get a YES answer with one chosen number(s) and a NO with another.

Try $$x=0$$ then $$y=1$$ and the answer to the question is NO;
Increase $$x$$: try $$x=10$$ then $$y=6$$ and the answer to the question is YES.

Two different answer, hence not sufficient.

Hope it helps.
_________________
Retired Moderator
Status: 2000 posts! I don't know whether I should feel great or sad about it! LOL
Joined: 04 Oct 2009
Posts: 1379
Location: Peru
Schools: Harvard, Stanford, Wharton, MIT & HKS (Government)
WE 1: Economic research
WE 2: Banking
WE 3: Government: Foreign Trade and SMEs
Re: Is x > y? (1) x = y + 2 (2) x/2 = y -1 [#permalink]

### Show Tags

01 Sep 2010, 18:42
Bunuel wrote:
metallicafan wrote:
This is easy, but I want to know if you have a method to assign values in the case of clue #2. I want to answer this type of questions as fast as I can. Thanks!

Is x>y?

(1) x = y + 2
(2) x/2 = y -1

Is $$x>y$$?

(1) $$x=y+2$$ --> if you just read what is written you'll get "$$x$$ is 2 more than $$y$$", so $$x$$ is more than $$y$$. Sufficient.

Or you can substitute $$x$$ in the question: is $$x>y$$? --> question becomes: is $$y+2>y$$? is $$2>0$$? YES, 2 is more than 0. So the answer to the question is YES. Sufficient.

(2) $$\frac{x}{2}=y-1$$ --> $$x=2y-2$$ --> substitute $$x$$ in the question: is $$x>y$$? --> question becomes: is $$2y-2>y$$? is $$y>2$$? We don't know that, hence this statement is not sufficient.

As for number plugging:
On DS questions when plugging numbers, goal is to prove that the statement is not sufficient. So we should try to get a YES answer with one chosen number(s) and a NO with another.

Try $$x=0$$ then $$y=1$$ and the answer to the question is NO;
Increase $$x$$: try $$x=10$$ then $$y=6$$ and the answer to the question is YES.

Two different answer, hence not sufficient.

Hope it helps.

Thanks Bunuel!, you are the real Master!
_________________

"Life’s battle doesn’t always go to stronger or faster men; but sooner or later the man who wins is the one who thinks he can."

My Integrated Reasoning Logbook / Diary: http://gmatclub.com/forum/my-ir-logbook-diary-133264.html

GMAT Club Premium Membership - big benefits and savings

Non-Human User
Joined: 09 Sep 2013
Posts: 7274
Re: Is x > y? (1) x = y + 2 (2) x/2 = y -1 [#permalink]

### Show Tags

09 Aug 2017, 08:06
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
Re: Is x > y? (1) x = y + 2 (2) x/2 = y -1   [#permalink] 09 Aug 2017, 08:06
Display posts from previous: Sort by

# Events & Promotions

 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®.