Live GMAT classes with Target Test Prep start Nov 21 and Nov 22. First class free.

See classes
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.

Newsweek Readers’ Choice Awards 2026 winner: Target Test Prep, #1 Test Prep

Target Test Prep was voted #1 Best Test Prep in the 2026 Newsweek Readers’ Choice™ Awards.

★★★★★5.0563 reviews
GMATLiveTeachStarts Nov 22
Josh Braslow, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Josh Braslow, 20+ years in test prep

Nov 22 · Josh Braslow
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes + 6 months of TTP OnDemand
  • Attend the first class for free
  • Every class is recorded, so you never fall behind
View classes & enroll
Limited seats availableTarget Test Prep
EALiveTeachOnDemandStart anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

EXECUTIVE ASSESSMENT

with

165+ EA score guarantee
$05-day trial no automatic billing
Schedule
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 Start free 5-day trial
Limited cohort · enrollment openTrial includes full course accessTarget Test Prep
GMATOnDemandStart 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 563 reviewsTarget Test Prep

Easy DS triangle - Can't get my head around

Expert replies
Post new topic Post Reply
Subscribe topic
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 41
Joined: Thu Jul 12, 2007 1:16 am
Location: Cape Town South Africa
Thanked: 5 times
by Saffa » Mon Oct 13, 2008 11:05 am
Please see attached GMAT prep Question. Should be easy (4th question , but can't get my head aroundit.
You do not have the required permissions to view the files attached to this post.
Top
Join the discussion
Source: — Data Sufficiency |
Legendary Member
Posts: 1153
Joined: Wed Jun 20, 2007 6:21 amFollowed by: 2 members
Thanked: 146 times

by parallel_chase » Mon Oct 13, 2008 12:51 pm
refer this

https://www.beatthegmat.com/angles-gprep-t14992.html
No rest for the Wicked....
Top
Join the discussion
Senior | Next Rank: 100 Posts
Posts: 41
Joined: Thu Jul 12, 2007 1:16 am
Location: Cape Town South Africa
Thanked: 5 times

by Saffa » Mon Oct 13, 2008 1:01 pm
I don't understand your explanation. With S = 90, "Therefore the remaining two angles can be 60, 30." Why would the other two angles be 30 and 60 and not any combination of numbers where the sum wil be 90 (ie. 45, 45 or 5, 85)?
Top
Join the discussion
Legendary Member
Posts: 1153
Joined: Wed Jun 20, 2007 6:21 amFollowed by: 2 members
Thanked: 146 times

by parallel_chase » Mon Oct 13, 2008 1:24 pm
Here is the process:

question stem : PRS - PQR = ?

Statement I
QPR = 30
QPR + PQR + PRQ = 180
PQR + PRQ = 180-30 = 150

PRQ = 150 - PQR

PRS + PRQ = 180 [ANGLES FORMED IN STRAIGHT LINE]

PRS + 150 - PQR = 180

PRS - PQR = 180-150 = 30

Sufficient.


Statement II

PQR + PRQ = 150

PRQ = 150-PQR

PRS + PRQ = 180 [ANGLES FORMED IN STRAIGHT LINE]

PRS + 150-PQR = 180

PRS - PQR = 180 -150 = 30

Sufficient.

Hence D.

My earlier explanation seems bit off track, dont know what I was thinking. :roll:

Hope this explanation helps.
No rest for the Wicked....
Top
Join the discussion