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

Redeem

Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

★★★★★5.0559 reviews
GMATBootcamp Starts Sep 28
Chris Peckover, Target Test Prep GMAT expert
LIVE ONLINE BOOTCAMP

Live Online Bootcamp Class with Top GMAT Expert Chris Peckover

15 live classes from Sep 28, 2026

Schedule
Mon to Fri · 7:00 to 10:00 PM ET
Included
Live classes + 6 months of TTP OnDemand
  • Boost your GMAT score in less than one month in a live online class
  • 6 months access to TTP OnDemand video courses included
View bootcamp & enroll
Limited cohort · enrollment openTarget Test Prep
EALiveTeach 5 seats left
Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

Schedule
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll
Limited cohort · enrollment openTarget Test Prep
GMATOnDemand Start anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions
Start free 5-day trial
Read 559 reviewsTarget Test Prep

Compare the format, schedule, and included access before enrolling. Prices and seat counts shown reflect the supplied offer details.

GMATPrep

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Data Sufficiency |
Master | Next Rank: 500 Posts
Posts: 128
Joined: Sat Nov 17, 2007 11:59 am
Thanked: 1 times

by cris » Sun Jan 27, 2008 7:47 pm
This question is really confusing, "least common denominator" is not HCF or LCM...Least common denominator of anything should be 1...

Calista are you sure you copied that correctly??
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Junior | Next Rank: 30 Posts
Posts: 28
Joined: Wed Jan 16, 2008 9:10 pm

by malnv » Sun Jan 27, 2008 8:00 pm
Least Common denominator is usually applied to fractions. We unknowingly do L.C.D all the time when adding fractions

From the Q..

1. x/y + 1/3 has L.C.D. of 6 .
i.e. L.C.M (y,3) = 6 which gives y =2 (if the fraction is in reduced form)

But, x/y can be 2/4, which makes y =4..

So Not SUFF


2. x= 1, no way to find y.


Combining 1 & 2, y =2
SUFF

ANS: C

let me know if it matches with OA.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 128
Joined: Sat Nov 17, 2007 11:59 am
Thanked: 1 times

by cris » Sun Jan 27, 2008 8:08 pm
we do the Least Common Multiple when adding fractions....

Correct me if i am wrong.
Last edited by cris on Sun Jan 27, 2008 10:42 pm, edited 3 times in total.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Master | Next Rank: 500 Posts
Posts: 423
Joined: Thu Dec 27, 2007 1:29 amFollowed by: 2 members
Location: Hyderabad, India
Thanked: 36 times
GMAT Score:770

by simplyjat » Sun Jan 27, 2008 8:55 pm
L.C.M (y,3) = 6 which gives y =2 (if the fraction is in reduced form)
This interpolation is incorrect y can be 6 as well...
simplyjat
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Junior | Next Rank: 30 Posts
Posts: 28
Joined: Wed Jan 16, 2008 9:10 pm

by malnv » Sun Jan 27, 2008 9:03 pm
You are right.. Its a possibility..

So combining 1 & 2, y can be either 2 or 6.

So it should be E.

Looks like i need to spend few seconds extra before i conclude :)

Thx for catching!
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 158
Joined: Mon Dec 03, 2007 8:32 am
Thanked: 7 times

by StarDust845 » Mon Jan 28, 2008 9:41 am
Yeah I too was confused with the question. But the question is correct and I think malnv's solution is good.

So rephrasing is LCD just LCM of denomitors?

Calista.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Master | Next Rank: 500 Posts
Posts: 423
Joined: Thu Dec 27, 2007 1:29 amFollowed by: 2 members
Location: Hyderabad, India
Thanked: 36 times
GMAT Score:770

by simplyjat » Mon Jan 28, 2008 10:22 pm
E is the correct answer for the question...
Thanks for updating the solution malnv
simplyjat
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1