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

It is currently 26 Apr 2018, 10:21

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

What is the value of (u + v)? (1) 2w − 7 = 0 (2) u + v − 3w = 11

  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: 44651
What is the value of (u + v)? (1) 2w − 7 = 0 (2) u + v − 3w = 11 [#permalink]

Show Tags

New post 22 Jan 2016, 10:25
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

93% (00:22) correct 7% (00:34) wrong based on 56 sessions

HideShow timer Statistics

Retired Moderator
avatar
B
Status: On a mountain of skulls, in the castle of pain, I sit on a throne of blood.
Joined: 30 Jul 2013
Posts: 353
GMAT ToolKit User Reviews Badge CAT Tests
Re: What is the value of (u + v)? (1) 2w − 7 = 0 (2) u + v − 3w = 11 [#permalink]

Show Tags

New post 24 Jan 2016, 07:42
What is the value of (u + v)?

(1) 2w − 7 = 0
No information about u or v.
Not Sufficient


(2) u + v − 3w = 11
No information about w.
Not Sufficient
u+v

1 and 2. w=7/2
From 1: w=7/2
Plug this in the equation in statement 2 and we will have the value of u+v.
Sufficient

Answer: C
Expert Post
Top Contributor
1 KUDOS received
SVP
SVP
User avatar
P
Joined: 12 Sep 2015
Posts: 2325
Location: Canada
Re: What is the value of (u + v)? (1) 2w − 7 = 0 (2) u + v − 3w = 11 [#permalink]

Show Tags

New post 19 Nov 2017, 16:03
1
This post received
KUDOS
Expert's post
Top Contributor
Bunuel wrote:
What is the value of (u + v)?

(1) 2w − 7 = 0
(2) u + v − 3w = 11


Target question: What is the value of (u + v)?

Statement 1: 2w − 7 = 0
No information about u or v.
Statement 1 is NOT SUFFICIENT

Statement 2: u + v − 3w = 11
There are several values of u, v and w and y that satisfy the equation u + v − 3w = 11. Here are two:
Case a:u = 14, v = 0 and w = 1. In this case, the answer to the target question is u + v = 14 + 0 = 14
Case b: u = 17, v = 0 and w = 2. In this case, the answer to the target question is u + v = 17 + 0 = 17
Since we cannot answer the target question with certainty, statement 2 is NOT SUFFICIENT

Statements 1 and 2 combined
Statement 1 tells us that 2w − 7 = 0
Statement 2 tells us that u + v − 3w = 11

If we take 2w − 7 = 0 and solve for w, we get w = 3.5
Now take u + v − 3w = 11 and replace w with 3.5 to get: u + v − 3(3.5) = 11
Evaluate to get: u + v − 10.5 = 11
Add 10.5 to both sides to get: u + v = 21.5
So, the answer to the target question is u + v = 21.5
Since we can answer the target question with certainty, the combined statements are SUFFICIENT

Answer: C

Cheers,
Brent
_________________

Brent Hanneson – Founder of gmatprepnow.com

Image

Re: What is the value of (u + v)? (1) 2w − 7 = 0 (2) u + v − 3w = 11   [#permalink] 19 Nov 2017, 16:03
Display posts from previous: Sort by

What is the value of (u + v)? (1) 2w − 7 = 0 (2) u + v − 3w = 11

  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®.