BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Equation

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Data Sufficiency |
Legendary Member
Posts: 2789
Joined: Tue Jul 26, 2011 12:19 am
Location: Chennai, India
Thanked: 206 times
Followed by:43 members
GMAT Score:640

by GmatKiss » Thu Oct 27, 2011 1:21 am
IMO: E, what's the doubt?
Top

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 3835
Joined: Fri Apr 02, 2010 10:00 pm
Location: Milpitas, CA
Thanked: 1854 times
Followed by:523 members
GMAT Score:770

by Anurag@Gurome » Thu Oct 27, 2011 3:29 am
apshara5 wrote:What is the value of x?

(1) x + 2y = 4
(2) 5x + y + 15 = 3x - 3y + 23
Statement 1: One equation in two unknown is not enough to determine the value of x.

NOT sufficient


Statement 1: 5x + y + 15 = 3x - 3y + 23
---> (5x - 3x) + (y + 3y) + (15 - 23) = 0
---> 2x + 4y - 8 = 0
---> x + 2y - 4 = 0
---> x + 2y = 4 ------ Same as the equation in statement 1
One equation in two unknown is not enough to determine the value of x.

NOT sufficient

1 & 2 Together: No new information ---> NOT sufficient

The correct answer is E.
Anurag Mairal, Ph.D., MBA
GMAT Expert, Admissions and Career Guidance
Gurome, Inc.
1-800-566-4043 (USA)

Join Our Facebook Groups
GMAT with Gurome
https://www.facebook.com/groups/272466352793633/
Admissions with Gurome
https://www.facebook.com/groups/461459690536574/
Career Advising with Gurome
https://www.facebook.com/groups/360435787349781/
Top
Post new topic Post Reply
• Page 1 of 1