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

Redeem

Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

★★★★★5.0559 reviews
GMATLiveTeach 7 seats left
Chris Peckover
NEXT LIVE COHORT

Oct 13 to Jan 7, 2027

with Chris Peckover

Schedule
Tue, Thu · 8:00 to 10:00 PM ET
Included
40 live hours + 6 months of GMAT OnDemand
  • Live instruction and real-time questions
  • Class recordings and assigned practice
View class & enroll
Limited cohort · enrollment openTarget Test Prep
EALiveTeach 5 seats left
Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

Schedule
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll
Limited cohort · enrollment openTarget Test Prep
GMATOnDemand Start anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions
Start free 5-day trial
Read 559 reviewsTarget Test Prep

Compare the format, schedule, and included access before enrolling. Prices and seat counts shown reflect the supplied offer details.

GMAT PREP tougie

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Master | Next Rank: 500 Posts
Posts: 101
Joined: Thu Jan 06, 2011 12:44 am
Thanked: 1 times
by btgyes » Thu Feb 24, 2011 4:22 am
after solving both .

3Z < M < 4Z

now let say M = 3.5 Z,
now putting in main eq ie is M + Z > 0

ie M + 3.5 Z > 0
or 4.5 Z > 0

can't say because Z still can be negative.

So i found and E

but OA is different

plz help..

ta
Attachments
10.JPG
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Data Sufficiency |
Legendary Member
Posts: 1578
Joined: Sun Dec 28, 2008 1:49 amFollowed by: 9 members
Thanked: 82 times
GMAT Score:720

by maihuna » Thu Feb 24, 2011 4:30 am
Aha so u donot got the expert only reply so reposting is't.

I think someone/may be u recently posted this Q.

C is a clear ans:

Adding both statements it gives : z>0

1 says : m>3z => m>0

COmbining m>0 as z>0

so m+z>0

It is a clear C, what is the confusion?
Charged up again to beat the beast :)
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY

GMAT/MBA Expert

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

by Anurag@Gurome » Thu Feb 24, 2011 4:48 am
(1) m - 3z > 0 or m > 3z. From here we cannot say whether m + z > 0.
So, (1) is NOT SUFFICIENT.

(2) 4z - m > 0 or 4z > m. Again we cannot say whether m + z > 0.
So, (2) is NOT SUFFICIENT.

Combining (1) and (2), 3z < m < 4z

If z = -1, then the above inequality becomes -3 < m < -4, but that is not true as -3 > -4. Hence z can never be negative as 3z < m < 4z turns false in that case.
This implies z has to be positive and since m lies between 3z and 4z, which are positive so m will also be positive. Hence m + z > 0 is true.

The correct answer is C.
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
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 1578
Joined: Sun Dec 28, 2008 1:49 amFollowed by: 9 members
Thanked: 82 times
GMAT Score:720

by maihuna » Thu Feb 24, 2011 4:52 am
Anurag,
you can simply add the two stmts that gives z>0

No need to cumbersome arithmetic, preety st forward.
Anurag@Gurome wrote:(1) m - 3z > 0 or m > 3z. From here we cannot say whether m + z > 0.
So, (1) is NOT SUFFICIENT.

(2) 4z - m > 0 or 4z > m. Again we cannot say whether m + z > 0.
So, (2) is NOT SUFFICIENT.

Combining (1) and (2), 3z < m < 4z

If z = -1, then the above inequality becomes -3 < m < -4, but that is not true as -3 > -4. Hence z can never be negative as 3z < m < 4z turns false in that case.
This implies z has to be positive and since m lies between 3z and 4z, which are positive so m will also be positive. Hence m + z > 0 is true.

The correct answer is C.
Charged up again to beat the beast :)
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 101
Joined: Thu Jan 06, 2011 12:44 am
Thanked: 1 times

by btgyes » Thu Feb 24, 2011 6:00 am
Thanks Guys..

You are brilliant...!
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1