GMAT Changed on April 16th - Read about the latest changes here

It is currently 23 Apr 2018, 00:53

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

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

If xy ≠ 0 and x ≠ y, what is the value of K?

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

Hide Tags

Expert Post
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 44617
If xy ≠ 0 and x ≠ y, what is the value of K? [#permalink]

Show Tags

New post 12 Apr 2018, 21:44
Expert's post
1
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

50% (01:17) correct 50% (01:40) wrong based on 20 sessions

HideShow timer Statistics

Expert Post
SVP
SVP
User avatar
P
Joined: 08 Jul 2010
Posts: 2067
Location: India
GMAT: INSIGHT
WE: Education (Education)
Reviews Badge
Re: If xy ≠ 0 and x ≠ y, what is the value of K? [#permalink]

Show Tags

New post 12 Apr 2018, 21:50
Bunuel wrote:
If xy ≠ 0 and x ≠ y, what is the value of K?


(1) \(Kx + x - Ky - y = 0\)

(2) \((\frac{x}{y})^k = \frac{y}{x}\)


Question: K = ?

Statement 1: \(Kx + x - Ky - y = 0\)

i.e. K (x-y) +(x-y) = 0
i.e. (K+1)(x-y) = 0

i.e. Either K = -1 or x=y but sine given that x ≠ y therefore K = 1

SUFFICIENT

Statement 2: \((\frac{x}{y})^k = \frac{y}{x}\)

i.e. (x/y)^K = (x/y)^(-1)

i.e. K = -1

SUFFICIENT

Answer: Option D
_________________

Prosper!!!
GMATinsight
Bhoopendra Singh and Dr.Sushma Jha
e-mail: info@GMATinsight.com I Call us : +91-9999687183 / 9891333772
Online One-on-One Skype based classes and Classroom Coaching in South and West Delhi
http://www.GMATinsight.com/testimonials.html

22 ONLINE FREE (FULL LENGTH) GMAT CAT (PRACTICE TESTS) LINK COLLECTION

Re: If xy ≠ 0 and x ≠ y, what is the value of K?   [#permalink] 12 Apr 2018, 21:50
Display posts from previous: Sort by

If xy ≠ 0 and x ≠ y, what is the value of K?

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


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

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®.