IMO C
A:
with w you can solve the 4 angles around w and nothing else
clockwise (from w)it will be 95 85 95 85
B:
all angles around z
125 and 55
A+B
in 4 sides figure
sum of angles = 360
you have 2 values
and 2 as (180-x) and (180-y)
can solve to get x+y
C
BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course
Redeem
Featured Course
Target Test Prep GMAT OnDemand
Scott Woodbury-Stewart’s private virtual classroom — 400 hours of master-class video lessons for the GMAT Focus Edition.
- 715+ score guarantee — highest in the industry (99th percentile)
- 52 chapters · 1,500+ lessons · 4,000+ practice questions
- 400 hours of video · 1,500+ instructor-led HD smartboard lessons
- 300,000+ students accepted to Harvard, Stanford, Wharton, Booth & Sloan & more
- 24/7 live support + weekly Zoom office hours with GMAT instructors
- TTP AI Assist — 24/7 AI-powered virtual tutor for instant help
- 1,200+ flashcards + AI-powered study assistant & daily calendar
- OnDemand, LiveTeach & GMAT Bootcamp formats available
- Also: GRE, SAT Math & Executive Assessment courses
- MBA Admissions Consulting now available
- 🏆 2025 EdTech Breakthrough Award: Test Prep Solution Provider of the Year
- 200,000+ students served
- 5-day free trial — $0 to start, no auto-billing, cancel anytime
★★★★★
5.0
(559 reviews)
130-pt guarantee
$0 to start
then $127/mo
tough geometry problem
Source: Beat The GMAT — Data Sufficiency |
I think C
these 4 lines form a quadrilateral
it's internal angles will be
180-x
180-y
180-w
180-z
The summ of these angles will be 360
180-x+180-y+180-w+180-z = 360
x+y+w+z = 360
we need x+y=?
Only (1) and (2) can give us what we want to find
x+y+125+95 = 360
x+y = 140
C
OA?
these 4 lines form a quadrilateral
it's internal angles will be
180-x
180-y
180-w
180-z
The summ of these angles will be 360
180-x+180-y+180-w+180-z = 360
x+y+w+z = 360
we need x+y=?
Only (1) and (2) can give us what we want to find
x+y+125+95 = 360
x+y = 140
C
OA?
