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
Source: — Problem Solving |
Junior | Next Rank: 30 Posts
Posts: 14
Joined: Tue Jul 01, 2008 7:38 am

by event_horizon » Sun Sep 21, 2008 9:36 pm
is it C?
OA?
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

OA

by ritula » Sun Sep 21, 2008 9:48 pm
YEs it is . Kindly explain
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
Junior | Next Rank: 30 Posts
Posts: 14
Joined: Tue Jul 01, 2008 7:38 am

by event_horizon » Sun Sep 21, 2008 9:54 pm
ok..very simple concept.
y(u-c)=0 & j(u-k)=0

it directly follows from the above equations that y=0 and j=0
out of all the possibilities,the only one correct it yj=0.only choice 4, y=0 is incomplete,only choice 5 , j=0 is also incomplete.both have to be zero.hence the answer c.choices 1,2 are outta question.
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 » Sun Sep 21, 2008 10:07 pm
But u have neglected the fact that frm eq 1, u=c
& frm eq 2, u=k is another possibility.

From y(u-c)=0 , we can say that either y=0 or u=c.
event_horizon wrote:ok..very simple concept.
y(u-c)=0 & j(u-k)=0

it directly follows from the above equations that y=0 and j=0
out of all the possibilities,the only one correct it yj=0.only choice 4, y=0 is incomplete,only choice 5 , j=0 is also incomplete.both have to be zero.hence the answer c.choices 1,2 are outta question.
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
User avatar
Senior | Next Rank: 100 Posts
Posts: 55
Joined: Sun Sep 14, 2008 6:51 am
Location: Netherlands
Thanked: 10 times
GMAT Score:680

by tendays2go » Mon Sep 22, 2008 7:44 am
y(u-c) = 0 & j(u-k) =0
also,
c<k => c-k <0 .....this is the hint here.

but, the only link in 2 eqns is u, so we need to get a value for it.

therefore, in y(u-c)=0 ,assuming that y!= 0 => u =c

now => in j(u-k) = j(c-k)=0 => j =0 [my original answer :( ]

also, y can as well be 0 (contradicting our assumption above)
thus, y*j will definitely be 0. hence, the answer.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1