OA C.
1)
Let m=1/3. n = 1/2, x =2
m/n = 2/3
(m+x)/(n+x) = 7/3 / 5/2 = 14/15 .
(m+x)/(n+x) > m/n
But m=5. n = 6 if x = -1
m/n = 5/6 = 0.83...
(m+x)/(n+x) = 4/5 = 0.8
(m+x)/(n+x) < m/n
Stmt 2:
x>0.
NS
But m=2. n = 3, x = 1
m/n = 2/3
(m+x)/(n+x) = 3/4
(m+x)/(n+x) > m/n
But m=3. n = 2, x = 1
m/n = 3/2
(m+x)/(n+x) = 4/3
(m+x)/(n+x) < m/n
Combining the two.
m<n
m/n <1.
So the conditions set in each other are cancelled out.
Hence sufficient.
C
I know you can take similar values in all cases during the exam. I just tried to illustrate with as many values as possible.
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
m and n
Source: Beat The GMAT — Quantitative Reasoning |
