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.
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
|x + y|...
[#permalink]
Updated on: 13 Sep 2020, 14:57
Updated on: 13 Sep 2020, 14:57
3
5
Bookmarks
00:00
Question Stats:
73% (00:24) correct
26% (00:23) wrong based on 306 sessions
Hide Show timer Statistics
Quantity A |
Quantity B |
|x + y| |
|x| + |y| |
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.
Note: These questions are designed to help students master quantitative comparison questions: https://www.greenlighttestprep.com/modu ... comparison
Originally posted by GreenlightTestPrep on 27 Jul 2016, 15:08.
Last edited by GreenlightTestPrep on 13 Sep 2020, 14:57, edited 3 times in total.
Last edited by GreenlightTestPrep on 13 Sep 2020, 14:57, edited 3 times in total.
Editing the post and adding the tags
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: |x + y|...
[#permalink]
28 Jul 2016, 10:05
28 Jul 2016, 10:05
1
GreenlightTestPrep wrote:
Quantity A |
Quantity B |
|x + y| |
|x| + |y| |
Let's use the strategy called LOOKING FOR EQUALITY.
Looking at the two quantities, I can see that they are EQUAL when x = 0 and y = 0
We get:
Quantity A: |x + y| = |0 + 0| = |0| = 0
Quantity B: |x| + |y| = |0| + |0| = 0 + 0 = 0
The two quantities are EQUAL
At this point, we know the correct answer is C or D
Now try some other values for x and y.
How about: x = -1 and y = 1
We get:
Quantity A: |x + y| = |-1 + 1| = |0| = 0
Quantity B: |x| + |y| = |-1| + |1| = 1 + 1 = 2
The two quantities are NOT EQUAL
Answer:
Show: ::
D
RELATED VIDEO
