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 →

Races problem #1

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
User avatar
Community Manager
Posts: 1537
Joined: Mon Aug 10, 2009 6:10 pmFollowed by: 252 members
Thanked: 653 times
by papgust » Fri Sep 18, 2009 7:51 pm
"A can give B a start of 20 seconds in a km race. B can give a start of 30 seconds in the same race. If A can give a start of 200m in the race, how long will A take to run the km?"

Can someone give a good approach to this prob?
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
User avatar
GMAT Instructor
Posts: 578
Joined: Tue Aug 25, 2009 6:00 pmFollowed by: 62 members
Thanked: 136 times

by KapTeacherEli » Fri Sep 18, 2009 8:47 pm
I'm afraid I'm not parsing this problem well--are you summarizing it? If so, can you post the original question?
Eli Meyer
Kaplan GMAT Teacher
Cambridge, MA
www.kaptest.com/gmat

ImageImageImage
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Community Manager
Posts: 1537
Joined: Mon Aug 10, 2009 6:10 pmFollowed by: 252 members
Thanked: 653 times

by papgust » Sat Sep 19, 2009 2:42 am
Hi Eli,

This is the original qn. I have not missed a single word..
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 527
Joined: Thu May 01, 2008 12:06 am
Thanked: 7 times

by real2008 » Sat Sep 19, 2009 8:03 am
please mention the source of question...
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Community Manager
Posts: 1537
Joined: Mon Aug 10, 2009 6:10 pmFollowed by: 252 members
Thanked: 653 times

by papgust » Sun Sep 20, 2009 4:34 am
Hi,

I got this kind of a problem from one of my friends who is preparing for CAT.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Newbie | Next Rank: 10 Posts
Posts: 8
Joined: Fri Jul 24, 2009 9:41 am

by vidyadhar » Mon Sep 21, 2009 7:04 am
if Va, Vb are speeds of A and B. And t is the time for A to complete the Km race.

Vb (t + 20) = Va*t

Vb(t-30)+ 200= Va*t.

Solving above 2 eqns for Vb, we get Vb= 4 m/s

Since it is a km race (1 Km).
Vb(t + 20) =1000 m = 4 (t + 20) => t=230 s

so the time for A to complete a km is 230 Seconds.

Not sure if it is the best/correct approach.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1