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

It is currently 22 Aug 2014, 06:17

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 xy +z = x(y+z) which of the following must be true? A)

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Senior Manager
Senior Manager
avatar
Joined: 13 Sep 2006
Posts: 282
Location: New York
Followers: 1

Kudos [?]: 4 [0], given: 0

GMAT Tests User
If xy +z = x(y+z) which of the following must be true? A) [#permalink] New post 05 Nov 2006, 16:11
If xy +z = x(y+z) which of the following must be true?

A) x=0 and z=0
B) x=1 and y=1
C) y=1 and z=0
D) x=1 or y=0
E) X=1 or z=0

What is the a quick way to do this one?
_________________

"Never let the fear of striking out get in your wayâ€

SVP
SVP
User avatar
Joined: 01 May 2006
Posts: 1816
Followers: 8

Kudos [?]: 87 [0], given: 0

GMAT Tests User
 [#permalink] New post 05 Nov 2006, 16:17
(E) :)

xy +z = x(y+z)
<=> xy + z = xy +xz
<=> z = xz

Implies that
o z=0 and x is any real number
or
o z is any real number and x=1
Senior Manager
Senior Manager
avatar
Joined: 13 Sep 2006
Posts: 282
Location: New York
Followers: 1

Kudos [?]: 4 [0], given: 0

GMAT Tests User
 [#permalink] New post 05 Nov 2006, 16:26
Thanks Fig for the great explanation!
_________________

"Never let the fear of striking out get in your wayâ€

SVP
SVP
User avatar
Joined: 01 May 2006
Posts: 1816
Followers: 8

Kudos [?]: 87 [0], given: 0

GMAT Tests User
 [#permalink] New post 06 Nov 2006, 00:54
U are welcome :)
  [#permalink] 06 Nov 2006, 00:54
    Similar topics Author Replies Last post
Similar
Topics:
10 Experts publish their posts in the topic If xy+z = x(y+z), which of the following must be true? dhushan 10 16 Sep 2009, 11:34
If xy + z = x(y+z), which of the following must be true? A. jimmyjamesdonkey 3 18 May 2008, 17:14
If xy+z = x(y+z), which of the following must be true? a. chica 4 30 Mar 2008, 23:36
If xy + z = x(y+z), which of the following must be true? A. Hang Tuah 2 23 Dec 2007, 20:47
If xy+z = x(y+z), which of the following must be true? 1, pinal2 2 09 Dec 2007, 19:08
Display posts from previous: Sort by

If xy +z = x(y+z) which of the following must be true? A)

  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®.