Target Test Prep 20% Off Flash Sale is on! Code: FLASH20

Redeem
Target Test Prep
5-Day Free Trial
5-day free, full-access trial TTP

Available with Beat the GMAT members only code

MORE DETAILS
Target Test Prep
Magoosh
Magoosh
Study with Magoosh GMAT prep

Available with Beat the GMAT members only code

MORE DETAILS
Magoosh

DS

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Newbie | Next Rank: 10 Posts
Posts: 9
Joined: Sun Apr 10, 2011 6:53 am

DS

by nh_cryptic » Sun Apr 29, 2012 4:20 am
If x and y are positive, is x/y greater than 1 ?
(1) xy > 1
(2) x - y > 0
Top
Master | Next Rank: 500 Posts
Posts: 110
Joined: Wed Feb 22, 2012 11:28 pm
Location: India
Thanked: 13 times
Followed by:1 members

by spartacus1412 » Sun Apr 29, 2012 5:45 am
IMO D since x, y >0 is given.
Its do or die this time!
Practise, practise and practise.
Top
User avatar
GMAT Instructor
Posts: 15539
Joined: Tue May 25, 2010 12:04 pm
Location: New York, NY
Thanked: 13060 times
Followed by:1906 members
GMAT Score:790

by GMATGuruNY » Sun Apr 29, 2012 6:50 am
nh_cryptic wrote:If x and y are positive, is x/y greater than 1 ?
(1) xy > 1
(2) x - y > 0
Statement 1: xy > 1
If x=2 and y=1, the x/y = 2, which is greater than 1.
If x=1 and y=2, then x/y = 1/2, which is less than 1.
INSUFFICIENT.

Statement 2: x - y > 0
Thus, x>y.
Thus, x/y = (greater positive)/(smaller positive), which must yield a value greater than 1.
SUFFICIENT.

The correct answer is B.
Private tutor exclusively for the GMAT and GRE, with over 20 years of experience.
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.

As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.

For more information, please email me (Mitch Hunt) at [email protected].
Student Review #1
Student Review #2
Student Review #3
Top

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 3835
Joined: Fri Apr 02, 2010 10:00 pm
Location: Milpitas, CA
Thanked: 1854 times
Followed by:523 members
GMAT Score:770

by Anurag@Gurome » Sun Apr 29, 2012 10:17 am
nh_cryptic wrote:If x and y are positive, is x/y greater than 1 ?
(1) xy > 1
(2) x - y > 0
Since x and y are positive, so we can say that the question is: Is x/y > 1 or Is x > y?

(1) xy > 1
If x = 4, y = 2, xy = 8 > 1. Here x/y = 4/2 = 2 > 1
If x = 2, y = 4, xy = 8 > 1. Here x/y = 2/4 = 1/2 < 1
No definite answer; NOT sufficient.

(2) x - y > 0 or x > y, which directly answers the question asked; SUFFICIENT.

The correct answer is B.
Anurag Mairal, Ph.D., MBA
GMAT Expert, Admissions and Career Guidance
Gurome, Inc.
1-800-566-4043 (USA)

Join Our Facebook Groups
GMAT with Gurome
https://www.facebook.com/groups/272466352793633/
Admissions with Gurome
https://www.facebook.com/groups/461459690536574/
Career Advising with Gurome
https://www.facebook.com/groups/360435787349781/
Top
Post new topic Post Reply
• Page 1 of 1