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 →

Algebra

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 89
Joined: Sun Aug 10, 2008 8:35 pm
by ritula » Mon Aug 25, 2008 2:53 am
If Sam has 5 more marbles than Jack, Jack has 4 more marbles than Frank, and Frank has 5 more marbles than Ted, what is the least number of marbles that must change hands if the four boys are to have an equal number of marbles?
Philosophers have interpreted world in various ways, the point is to change it!
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
Master | Next Rank: 500 Posts
Posts: 294
Joined: Tue Feb 26, 2008 9:05 pmFollowed by: 1 member
Thanked: 13 times

by amitansu » Mon Aug 25, 2008 3:44 am
I think it's 9 altogether.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 891
Joined: Sat Aug 16, 2008 4:21 amFollowed by: 1 member
Thanked: 27 times
GMAT Score:660(

by 4meonly » Mon Aug 25, 2008 8:23 am
total 9 marbles
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 1153
Joined: Wed Jun 20, 2007 6:21 amFollowed by: 2 members
Thanked: 146 times

by parallel_chase » Mon Aug 25, 2008 9:20 am
S=T+14=J+5=F+9

14+5+9 = 28

28/4 = 7

The question is asking least number of marbles. Hence 7 is the answer.

whats the OA?
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 76
Joined: Sat Aug 02, 2008 10:05 pm
Thanked: 5 times

by rishi235 » Mon Aug 25, 2008 9:46 am
Hi...
I also got 7...which is the average of the no. of marbles..
But i do not think its the right answer...

@ chase...
I guess we need the find the least no. of marbles 'exchanged'...

I just substituted the values as
0 , 5 , 9 & 14...

So all the boys to have 7 marbles... we need to exchange 7+2 = 9 marbles..
So ans is 9.

@ Ritula... wats the OA...
Last edited by rishi235 on Mon Aug 25, 2008 10:13 am, edited 2 times in total.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 198
Joined: Fri Mar 09, 2007 8:40 pm
Thanked: 7 times

by kris610 » Mon Aug 25, 2008 10:08 am
I agree with 9:

Total in terms of T: 4(T+7), which means each boy should've T+7. Sam needs to give up 7 and Jack nees to give up 2.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 89
Joined: Sun Aug 10, 2008 8:35 pm

by ritula » Mon Aug 25, 2008 9:54 pm
yes OA is 9 indeed. Thanks to all.
Philosophers have interpreted world in various ways, the point is to change it!
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1