|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
22 Jan 2016, 10:25
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
93% (00:34) correct
7%
(00:38)
wrong
based on 136
sessions
History
Date
Time
Result
Not Attempted Yet
24 Jan 2016, 07:42
Kudos
Bookmarks
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
(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
19 Nov 2017, 16:03
Kudos
Bookmarks
Bunuel
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
