BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem
TTP OnDemand GMAT Video Course
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
Start Free 5-Day Trial Read 559 Reviews →

The distance from Adelaide to Stansbury by road is how many

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
User avatar
Junior | Next Rank: 30 Posts
Posts: 25
Joined: Sat Aug 23, 2014 11:19 pmFollowed by: 1 member
Location: Dhaka,Bangladesh
Thanked: 2 times
by AbdurRakib » Fri Jul 29, 2016 1:45 pm
The distance from Adelaide to Stansbury by road is how many miles longer than the distance from Adelaide to Stansbury by sea?

(1) If a car and a boat left Adelaide at the same time and both traveled at an average speed of 30 miles per hour, the boat would arrive at Stansbury 3 hours before the car.

(2) If a car traveled at an average speed of 60 miles per hour and a boat traveled at an average speed of 15 miles per hour, each would complete the trip from Adelaide to Stansbury in 2 hours.

Source: kaplan
What is of supreme importance in war is to attack the enemy's strategy.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Data Sufficiency |
GMAT Instructor
Posts: 2630
Joined: Wed Sep 12, 2012 3:32 pmFollowed by: 119 members
Location: East Bay all the way
Thanked: 625 times
GMAT Score:780

by Matt@VeritasPrep » Fri Aug 05, 2016 3:25 pm
Let's say the car's rate = c, the car's time = d, the boat's rate = b, and the boat's time = a.

From that, we have

Car's Distance = cd
Boat's Distance = ab

and we want |cd - ab|.

S1

30*d = 30*(a - 3)

30d = 30a - 90

d = a - 3

c = 30

b = 30

so

|cd - ab| => |30*(a - 3) - 30*a| => |30a - 90 - 30a| => 90; SUFFICIENT.

You can also see this conceptually by imagining each vehicle. When the boat completes the journey, it and the car have traveled the SAME mileage, since they've each gone for x hours @ 30 mph. At that point, the car has to make up the remaining distance. It takes 3 hours @ 30 mph to do so, so the car travels an extra 90 miles, making the car's distance 90 miles longer.

S2

60*2 = 15*2

This tells us the distance for each: the car has to travel 120 miles (60 mph * 2 hours) and the boat has to travel 30 miles (15 mph * 2 hours). So we have each distance, and can find the different: 120 - 30; SUFFICIENT.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1