|
|
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.
13 Sep 2020, 03:00
Kudos
Bookmarks
B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
70% (01:23) correct
30%
(01:22)
wrong
based on 90
sessions
History
Date
Time
Result
Not Attempted Yet
If 5w + 3v = 13, what is the value of vw ?
(1) w > 0
(2) w/v = 2
(1) w > 0
(2) w/v = 2
Pure algebraic questions like this one are no longer part of the GMAT Data Sufficiency syllabus.
For relevant Data Sufficiency questions, please check the Data Sufficiency forum:
Data Sufficiency Forum
Data Sufficiency Forum
If 5w + 3v = 13, what is the value of vw ?
(1) w > 0
W = 0.2
1 +3v = 13
V = 4
VW = 0.8
If W = 2
3V = 3
V = 1
VW = 2
INSUFFICIENT
(2) w/v = 2
5w + 3v = 13
W= 2V
10v +3v = 13
13v= 13
V=1
Substituting v = 1 in 5w + 3v = 13
5W = 10
W = 2
VW = 2*1 = 2
SUFFICIENT
Answer - B
Posted from my mobile device
(1) w > 0
W = 0.2
1 +3v = 13
V = 4
VW = 0.8
If W = 2
3V = 3
V = 1
VW = 2
INSUFFICIENT
(2) w/v = 2
5w + 3v = 13
W= 2V
10v +3v = 13
13v= 13
V=1
Substituting v = 1 in 5w + 3v = 13
5W = 10
W = 2
VW = 2*1 = 2
SUFFICIENT
Answer - B
Posted from my mobile device
13 Sep 2020, 03:39
Kudos
Bookmarks
Bunuel
Statement 1 barely tells us anything. From Statement 2, we know v = 2w, and we can use that to substitute for "v" in the equation 5w + 3v = 13 to solve for w and v, and answer the question, so the answer is B.
But I wonder if the question is meant to instead say something like this:
If 5w + 3v = 13, what is the value of vw?
1. w and v are positive integers
2. v/w = 1/2
or at least, I wonder if that's how Statement 2 should read; with "v/w" on the left side, the solution becomes clean (w = 2, v = 1) instead of messy. I also rewrote Statement 1 so that it wasn't pointless -- in this version of the question, Statement 1 also is sufficient, since there is only one positive integer solution for w and v. This version of the question feels to me much more like what you might see on the GMAT.
