Let t be the time taken byPablo & s be pablo's speed, we get s*t distance by Pablo
(1) gives us the distance by Al= (t+1)*(s-5), we hv no info abt Marsha - INSUFF
(2) gives distance by Marsha = 50*9 miles, alone is INSUFF
(1) & (2) together give us equation, s*t + (t+1)*(s-5) + 50*9 = 1500
this again is INSUFF as we have 2 variables s&t and only 1 equation.
Answer E
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
GMAT Prep / Rates
Source: Beat The GMAT — Data Sufficiency |
-
earth@work
- Master | Next Rank: 500 Posts
- Posts: 248
- Thanked: 13 times
