Find all School-related info fast with the new School-Specific MBA Forum

It is currently 23 Aug 2014, 03:38

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

If x and y are positive integers, is 5x(1/4)y < 1 ? (1) y

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Intern
Intern
avatar
Joined: 19 Jul 2008
Posts: 25
Followers: 0

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

If x and y are positive integers, is 5x(1/4)y < 1 ? (1) y [#permalink] New post 25 Aug 2008, 07:17
If x and y are positive integers, is 5x(1/4)y < 1 ?
(1) y = 3x.
(2) x = 2.
SVP
SVP
User avatar
Joined: 30 Apr 2008
Posts: 1893
Location: Oklahoma City
Schools: Hard Knocks
Followers: 29

Kudos [?]: 428 [0], given: 32

GMAT Tests User
Re: inequality [#permalink] New post 25 Aug 2008, 08:50
D
gmatcraze wrote:
If x and y are positive integers, is 5x(1/4)y < 1 ?
(1) y = 3x.
(2) x = 2.


(1)
(5x)1/4(3x) < 1
(5x)(3/4x) < 1
15/4x < 1

We are told in the stem that x and y are positive integers, meaning >= 1. If x must be at least 1, then 15/4 * 1 = 3.75 and that's greater than 1. The answer to the stem question is "No." but this statment is sufficient to give us an answer to the stem.

(2) 5(2)(1/4)y < 1
10(1/4)y < 1
2.5y < 1
Again, if y must be a positive integer, then the lowest value possible is 2.5 < 1, so the answer is "No." and this is sufficient information.
_________________

------------------------------------
J Allen Morris
**I'm pretty sure I'm right, but then again, I'm just a guy with his head up his a$$.

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Senior Manager
Senior Manager
avatar
Joined: 06 Apr 2008
Posts: 452
Followers: 1

Kudos [?]: 44 [0], given: 1

Re: inequality [#permalink] New post 25 Aug 2008, 09:04
gmatcraze wrote:
If x and y are positive integers, is 5x(1/4)y < 1 ?
(1) y = 3x.
(2) x = 2.


5xy/4 < 1

Statement 1) y=3x

15x^2/4 < 1 , this is false for all integer values of x so statement 1) is suff.

Statement 2) x=2

10y/4 < 1 , this is false for +ve integer values of y so statement 2) is suff.

IMO D)
Re: inequality   [#permalink] 25 Aug 2008, 09:04
    Similar topics Author Replies Last post
Similar
Topics:
If x,y,z are positive integers and x<y<z, x = ? (1) vd 4 03 Jun 2008, 21:47
X and Y are positive integers. If 1/x + 1/y < 2, which of bmwhype2 12 22 Nov 2007, 04:34
x and y are positive integers, is X^y <= Y^x? 1. X = y^2 M8 4 14 Aug 2006, 22:05
if x and y are positive integers, is 4^x(1/3)^y < 1? (1) coffeeloverfreak 4 09 Sep 2005, 21:54
IF X and Y are positive integers, is (4^X) (1/3)^Y < 1? TooLegitToQuit 11 15 Jun 2005, 14:48
Display posts from previous: Sort by

If x and y are positive integers, is 5x(1/4)y < 1 ? (1) y

  Question banks Downloads My Bookmarks Reviews Important topics  


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

Powered by phpBB © phpBB Group and phpBB SEO

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®.