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

It is currently 14 Oct 2019, 08:42

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

If x + 2y + 1 = y - x, what is the value of x?

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Find Similar Topics 
Manager
Manager
avatar
Joined: 01 Dec 2011
Posts: 62
If x + 2y + 1 = y - x, what is the value of x?  [#permalink]

Show Tags

New post 06 Feb 2012, 08:33
1
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

86% (00:51) correct 14% (00:59) wrong based on 213 sessions

HideShow timer Statistics

If x + 2y + 1 = y - x, what is the value of x?

1) y² = 9
2) y = 3

_________________
http://en.wikipedia.org/wiki/Kudos
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 58316
Re: If x + 2y + 1 = y - x, what is the value of x?  [#permalink]

Show Tags

New post 06 Feb 2012, 08:37
Retired Moderator
avatar
Status: Enjoying the GMAT journey....
Joined: 26 Aug 2011
Posts: 559
Location: India
GMAT 1: 620 Q49 V24
GMAT ToolKit User
Re: If x + 2y + 1 = y - x, what is the value of x?  [#permalink]

Show Tags

New post 11 Feb 2012, 08:13
fiendex wrote:
If x + 2y + 1 = y - x, what is the value of x?

1) y² = 9
2) y = 3

1) y² = 9 so y = +3 or -3 and both values generate different answer for the value of x, hence insufficient, A and D gone
2) y=3 so this will give us only single value of x, remember solving for the value of x is not required, we know seeing x + 2y + 1 = y - x that if we know y , we will get the value of x... :wink:
IMO B
_________________
Fire the final bullet only when you are constantly hitting the Bull's eye, till then KEEP PRACTICING.

A WAY TO INCREASE FROM QUANT 35-40 TO 47 : http://gmatclub.com/forum/a-way-to-increase-from-q35-40-to-q-138750.html

Q 47/48 To Q 50 + http://gmatclub.com/forum/the-final-climb-quest-for-q-50-from-q47-129441.html#p1064367

Three good RC strategies http://gmatclub.com/forum/three-different-strategies-for-attacking-rc-127287.html
Manager
Manager
avatar
Joined: 22 Sep 2011
Posts: 201
GMAT 1: 720 Q49 V40
Re: If x + 2y + 1 = y - x, what is the value of x?  [#permalink]

Show Tags

New post 11 Feb 2012, 08:39
B - y could be 3 or -3 in statement 1
Current Student
User avatar
B
Status: DONE!
Joined: 05 Sep 2016
Posts: 358
Re: If x + 2y + 1 = y - x, what is the value of x?  [#permalink]

Show Tags

New post 17 Sep 2016, 06:16
1
B is correct. Here's why:

(1) y^2 = +/- 3

INSUFFICIENT - we need a single value for y in order to solve for a single value of x

(2) y = 3

=x+6+1 = 3-x
=x+7 = 3-x
=2x = -4 --> x = -2

SUFFICIENT
Non-Human User
User avatar
Joined: 09 Sep 2013
Posts: 13136
Re: If x + 2y + 1 = y - x, what is the value of x?  [#permalink]

Show Tags

New post 18 Feb 2019, 11:04
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.
_________________
GMAT Club Bot
Re: If x + 2y + 1 = y - x, what is the value of x?   [#permalink] 18 Feb 2019, 11:04
Display posts from previous: Sort by

If x + 2y + 1 = y - x, what is the value of x?

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  





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