Forum Home > GMAT > Quantitative > Problem Solving (PS)
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.
Jun 0712:00 PM PDT
-01:00 PM PDT
In this GMAT experience talk show, we talk to Tavishi, a young MBA aspirant from India who recently scored 725 in her latest GMAT Focus exam. It’s a 99.9 percentile score on the new GMAT Focus edition and she achieved this feat in her first GMAT attempt.
Jun 0811:00 AM IST
-01:00 PM IST
Attend this session to learn how to Deconstruct arguments, Pre-Think Author’s Assumptions, and apply Negation Test.- Jun 09
11:00 AM IST
-01:00 PM IST
Attend this session to evaluate your current skill level, learn process skills, and solve through tough Arithmetic questions - Jun 11
05:40 AM PDT
-12:00 PM PDT
Register for the GMAT Club Virtual MBA Spotlight fair, the biggest MBA fair of the year. You will have a chance to hear Admissions directors from almost every Top 20 program speak, network with peers, and more. 
Jun 1111:00 AM PDT
-12:00 PM PDT
Magoosh students get into top business schools like MIT Sloan, HBS, Stanford GSB, Wharton and more! See why over 6 million students trust us for exam prep.
Given the equations above, x + y + z = ?
[#permalink]
22 Feb 2022, 09:00
22 Feb 2022, 09:00
5
Bookmarks
Expert Reply
Show timer
00:00
A
B
C
D
E
Difficulty:
45%
(medium)
Question Stats:
69% (02:02) correct
31%
(02:29)
wrong
based on 118
sessions
6x – 5y + 3z = 23
4x + 8y – 11z = 7
5x – 6y + 2z = 12
Given the equations above, x + y + z = ?
(A) 11
(B) 12
(C) 13
(D) 14
(E) 15
4x + 8y – 11z = 7
5x – 6y + 2z = 12
Given the equations above, x + y + z = ?
(A) 11
(B) 12
(C) 13
(D) 14
(E) 15
Re: Given the equations above, x + y + z = ?
[#permalink]
22 Feb 2022, 09:17
22 Feb 2022, 09:17
2
Kudos
Equation 1 minus Equation 2 gives us x+y+z that gives us 11
Given the equations above, x + y + z = ?
[#permalink]
03 Mar 2022, 07:09
03 Mar 2022, 07:09
3
Kudos
Bunuel wrote:
6x – 5y + 3z = 23
4x + 8y – 11z = 7
5x – 6y + 2z = 12
Given the equations above, x + y + z = ?
(A) 11
(B) 12
(C) 13
(D) 14
(E) 15
4x + 8y – 11z = 7
5x – 6y + 2z = 12
Given the equations above, x + y + z = ?
(A) 11
(B) 12
(C) 13
(D) 14
(E) 15
\(6x – 5y + 3z = 23...\) (I)
\(4x + 8y – 11z = 7...\)(II)
\(5x – 6y + 2z = 12...\)(III)
Eqn (I) - Eqn(II)
\(2x -13y + 14z = 16\)...(IV)
Eqn(III) - Eqn (II)
\(x-14y+13z= 5\)...(V)
Eqn.(IV) - Eqn (V)
\(x+y+z= 11\)
Ans A
