GRE Prep 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.
Nov 17Live Online Classes with Top GRE Expert Rich Zwelling
08:00 PM EST
-10:00 PM EST
Get live instruction from a top-scoring, industry-recognized GRE teachers + 6 months of access to TTP Self-Study included! Tues/Thur Sept 7, 2026---Feb. 2, 2027, 1:00pm-3:00pm EST
Dec 14Live Online Classes with Top GRE Expert Michael Butville
08:00 PM EST
-10:00 PM EST
Get live instruction from a top-scoring, industry-recognized GRE teachers + 6 months of access to TTP Self-Study included! Mon/Wed Dec. 14, 2026---Feb. 22, 2027, 8:00pm-10:00pm EST
Average of xy vs 7
[#permalink]
05 Feb 2020, 10:03
05 Feb 2020, 10:03
1
Bookmarks
00:00
Question Stats:
83% (00:46) correct
16% (00:24) wrong based on 30 sessions
Hide Show timer Statistics
w + x + y = 21
A. The quantity in Column A is greater
B. The quantity in Column B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
Quantity A |
Quantity B |
Average of x and y |
7 |
A. The quantity in Column A is greater
B. The quantity in Column B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
Re: Average of xy vs 7
[#permalink]
05 Feb 2020, 11:59
05 Feb 2020, 11:59
1
huda wrote:
w + x + y = 21
A. The quantity in Column A is greater
B. The quantity in Column B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
Quantity A |
Quantity B |
Average of x and y |
7 |
A. The quantity in Column A is greater
B. The quantity in Column B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
If w + x + y = 21, then x + y = 21 - w. Since w can be any number - negative or positive, large or small, than x + y and (x+y)/2 can be smaller or greater than 7.
The answer is D.
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Average of xy vs 7
[#permalink]
05 Feb 2020, 16:19
05 Feb 2020, 16:19
1
huda wrote:
w + x + y = 21
A. The quantity in Column A is greater
B. The quantity in Column B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
Quantity A |
Quantity B |
Average of x and y |
7 |
A. The quantity in Column A is greater
B. The quantity in Column B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
Let's test some possible values
case i: Since w + x + y = 21 one possible set of values is w = 21, x = 0 and y = 0
We get:
Quantity A: Average of x and y = (0 + 0)/2 = 0
Quantity B: 7
In this case, Quantity B is greater
case ii: Since w + x + y = 21 another possible set of values is w = 1, x = 10 and y = 10
We get:
Quantity A: Average of x and y = (10 + 10)/2 = 10
Quantity B: 7
In this case, Quantity A is greater
Answer: D
RELATED VIDEO
