NEW HERE? LEARN MORE
closeclose
It is currently 16 Apr 2024, 10:55
Register
GMAT Focus Tests
Decision Tracker
My Rewards
New posts
New comers' posts

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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel

If x and y are positive integers, what is the value of x/y?

6 posts Go to First Unread Post
Print view
NEW TOPIC
POST REPLY
Question banks

GMAT Question Banks

Downloads
My Bookmarks
Reviews
SORT BY:
Date
Kudos
User avatar
L
Bunuel
Math Expert
Joined: 02 Sep 2009
Posts: 92697
CAT Tests Forum Quiz Mode
If x and y are positive integers, what is the value of x/y? [#permalink] New post  11 Jun 2015, 03:57
3
Bookmarks
Expert Reply
00:00
A
B
C
D
E

Difficulty:

35% (medium)

Question Stats:

65% (01:08) correct 35% (01:50) wrong based on 290 sessions
Hide Show timer Statistics
If x and y are positive integers, what is the value of x/y?

(1) x^2 = 2xy – y^2
(2) 2xy = 8

Kudos for a correct solution.
ShowHide Answer
Official Answer
Official Answer and Stats are available only to registered users. Register/Login.

_________________
New to the GMAT CLUB Forum?

My Signature Questions' Collection:


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics
Signature Read More
request expert reply
Most Helpful Reply
User avatar
S
askhere
Manager
Manager
Joined: 12 Nov 2014
Posts: 64
Re: If x and y are positive integers, what is the value of x/y? [#permalink] New post  11 Jun 2015, 04:06
3
Kudos
2
Bookmarks
Stmt 1: x^2 = 2xy – y^2
x^2 - 2xy + y^2 = 0
(x-y)^2 = 0; x -y = 0; x =y
x/y = 1. Suff

Stmt 2: 2xy = 8
xy =4
No info can be deduced about x/y . Not suff

Answer : A
General Discussion
avatar
bluesquare
Intern
Intern
Joined: 29 Mar 2015
Posts: 39
Location: United States
GMAT ToolKit User Reviews Badge
Re: If x and y are positive integers, what is the value of x/y? [#permalink] New post  12 Jun 2015, 00:48
Bunuel wrote:
If x and y are positive integers, what is the value of x/y?

(1) x^2 = 2xy – y^2
(2) 2xy = 8

Kudos for a correct solution.


1:
\(x^2=2xy-y^2\)
\(x^2 - 2xy + y^2 = 0\)
\((x-y)^2 = 0\)
\(x-y = 0\)
\(x=y\)
\(x/y=1\) sufficient.

2:
\(2xy =8\)
\(xy=4\)
If \(x=1, y=4, x/y=1/4\) but if \(x=4, y=1, x/y=4\) so not sufficient.
Answer is A.
User avatar
vishwaprakash
Queens MBA Thread Master
Joined: 24 Oct 2012
Posts: 141
Concentration: Leadership, General Management
Schools: Rotman '18 (WL) ISB '17
Re: If x and y are positive integers, what is the value of x/y? [#permalink] New post  16 Jun 2015, 10:23
Bunuel wrote:
If x and y are positive integers, what is the value of x/y?

(1) x^2 = 2xy – y^2
(2) 2xy = 8

Kudos for a correct solution.


Statement 1 :
X^2 = 2XY - Y^2
(X-Y)^2 = 0
X = Y

hence X/Y = 1, for all values of X and Y.
Statement 1 is sufficient

Statement 2:
XY = 4
multiple combination satisfy this condition
X =1, Y = 4 - > X/Y = 1/4
X = 2, Y = 2 -> X/Y = 1
X = 4, Y = 1 -> X/Y = 4

Hence Statement 2 is not sufficient.

Hence Option A is correct
User avatar
D
stonecold
Alum
Joined: 12 Aug 2015
Posts: 2284
Schools: Boston U '20 (M)
GRE 1: Q169 V154
GMAT ToolKit User
Re: If x and y are positive integers, what is the value of x/y? [#permalink] New post  29 Apr 2017, 17:49
We need x/y

Statement 1 => x^2=2xy-y^2
x^2+y^2-2xy=0
(x-y)^2=0
x-y=0
x=y

Hence x/y=1

Sufficient
Statement 2 =>
2xy=8
xy=4

(1,4)=> 1/4
(4,1)=> 4

Hence not sufficient

SMASH THAT A.
_________________
Give me a hell yeah ...!!!!!

MBA Recruiting:- EMPLOYMENT AND SALARY STATISTICS AT TOP B-SCHOOLS IN THE US! (2018)
MBA Financing:- INDIAN PUBLIC BANKS vs PRODIGY FINANCE!

Getting into HOLLYWOOD with an MBA!
The MOST AFFORDABLE MBA programs!
STONECOLD's BRUTAL Mock Tests for GMAT-Quant(700+)
AVERAGE GRE Scores At The Top Business Schools!
Signature Read More
User avatar
bumpbot
Non-Human User
Joined: 09 Sep 2013
Posts: 32499
Re: If x and y are positive integers, what is the value of x/y? [#permalink] New post  05 Jul 2020, 16:56
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 Books | GMAT Club Tests | Best Prices on GMAT Courses | GMAT Mobile App | Math Resources | Verbal Resources
Signature Read More
GMAT Club Bot
gmatclubot
Re: If x and y are positive integers, what is the value of x/y? [#permalink]
05 Jul 2020, 16:56
NEW TOPIC
POST REPLY
Downloads
My Bookmarks
Reviews
Moderator:
Bunuel
Math Expert
92697 posts

cron

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne
Main navigation
GMAT Resources
Partners
MBA Resources
www.gmac.com|www.mba.com | | GMAT Club Rules | Terms and Conditions