Events & Promotions
|
|
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.
Apr 2610:00 AM EDT
-11:00 AM EDT
The Target Test Prep course represents a quantum leap forward in GMAT preparation, a radical reinterpretation of the way that students should study. Try before you buy with a 5-day, full-access trial of the course for FREE!
Apr 2711:00 AM EDT
-12:00 PM EDT
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors
Apr 2808:00 AM PDT
-11:00 AM PDT
Whether you are just beginning your MBA journey or fine-tuning your path to a 700+ score, GMAT Day is designed to give you a competitive edge.
23 Mar 2017, 12:12
Kudos
Bookmarks
A
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:
84% (00:28) correct
16%
(00:38)
wrong
based on 426
sessions
History
Date
Time
Result
Not Attempted Yet
Does x + c = y + c ?
(1) x = y
(2) x = c
(1) x = y
(2) x = c
Solving this question helps.
Taking a timed set of similar questions in
GMAT Club Forum Quiz →
is even better.
23 Mar 2017, 12:25
Kudos
Bookmarks
racingip
you are not correct, and I will provide few examples.
statement 1 is sufficient as you say.
x=y, that means c=c all the times
say x=2, y=2, c=-2
2-2=2-2 = always true.
statement 2 is not sufficient, and here is why:
case 1:
x=c
x=2, c=2, y=2
2+2=2+2 - true
case 2:
x=c
x=2, c=2. y=-2
2+2=y+2 - not true
Y can be ANY number, therefore, it's an additional coefficient that we don't know
A is the answer.
don't take the QUESTION as a statement - you are asked whether x+c=y+c, not given it as a FACT!
General Discussion
23 Mar 2017, 12:18
Kudos
Bookmarks
The solution is supposed to be A. Yet, I am not clear about that.
My approach is as follows:
First, I simplify the equation: x+c=y+c, so I get x=y. The question becomes, is x=y?
Statement 1: x=y. Sufficient
Statement 2: x=c. Substituting x in the original equation we get x+x=y+x; 2x =y+x, and then x=y. So statement 2 is sufficient.
Solution is option D.
I am not sure what I am missing.
My approach is as follows:
First, I simplify the equation: x+c=y+c, so I get x=y. The question becomes, is x=y?
Statement 1: x=y. Sufficient
Statement 2: x=c. Substituting x in the original equation we get x+x=y+x; 2x =y+x, and then x=y. So statement 2 is sufficient.
Solution is option D.
I am not sure what I am missing.
