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

geometry - angle greater

Expert replies
by Xbond » Mon Aug 03, 2009 10:41 pm
Hi there,

I woud like your input about this difficult geometry question. Someone can explain to me in simple way the concept. Sorry, I don't know the answer. Look at the attachment.


In the figure shown, the measure of angle PRS is how many degrees greater than the
measure of angle PQR ?
(1) The measure of angle QPR is 30°.
(2) The sum of the measures of angles PQR and PRQ is 150°.
You do not have the required permissions to view the files attached to this post.
Join the discussion
Source: — Data Sufficiency |

by Gmat09_5ALL » Tue Aug 04, 2009 1:56 am
Answer - A


angle QPR = angle QPS - angle RPS = 30

since in two triangle one angle is 90 -> sum of other two angles would remains 90.

angle PQS + angle QPS = 90
angle SPR + angle PRS = 90

increase in one angle would decrease the other by same degree. Therefore, the different would be 30 degree. Hence A.

Please Correct If I am wrong .
Join the discussion

by mohitsharda » Tue Aug 04, 2009 9:43 am
Gmat09_5ALL wrote:Answer - A


angle QPR = angle QPS - angle RPS = 30

since in two triangle one angle is 90 -> sum of other two angles would remains 90.

angle PQS + angle QPS = 90
angle SPR + angle PRS = 90

increase in one angle would decrease the other by same degree. Therefore, the different would be 30 degree. Hence A.

Please Correct If I am wrong .

Yeah... the explanation is right.... but the answer would be D...
as

if you look at the second statement it says PQR+PRQ= 150

now since this is a triangle... the remaining angle is QPR = 30... which becomes the first condition

So, the answer would be D
MS
Join the discussion

by navalpike » Tue Aug 04, 2009 10:49 am
Math is not necessary for either statement.

As Ian points out in another post, if you simply take the line PR and stretch it out to PQ, you are closing a 30 degree "gap". Thus the difference between the angles will be 30 degrees for S1 as well as S2.
Join the discussion

by Xbond » Sun Aug 09, 2009 8:53 am
the right answer is D
Join the discussion