Live GMAT classes with Target Test Prep start Nov 21 and Nov 22. First class free.

See classes
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.

Newsweek Readers’ Choice Awards 2026 winner: Target Test Prep, #1 Test Prep

Target Test Prep was voted #1 Best Test Prep in the 2026 Newsweek Readers’ Choice™ Awards.

★★★★★5.0563 reviews
GMATLiveTeachStarts Nov 22
Josh Braslow, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Josh Braslow, 20+ years in test prep

Nov 22 · Josh Braslow
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes + 6 months of TTP OnDemand
  • Attend the first class for free
  • Every class is recorded, so you never fall behind
View classes & enroll
Limited seats availableTarget Test Prep
EALiveTeachOnDemandStart anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

EXECUTIVE ASSESSMENT

with

165+ EA score guarantee
$05-day trial no automatic billing
Schedule
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 Start free 5-day trial
Limited cohort · enrollment openTrial includes full course accessTarget Test Prep
GMATOnDemandStart 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 563 reviewsTarget Test Prep

GMATprep2: On the number line

Expert replies
Post new topic Post Reply
Subscribe topic
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 75
Joined: Tue Feb 10, 2009 11:30 pm
by nhai2003 » Sun Jul 12, 2009 10:29 pm
0---:-|---:--|-:--:-|--:---|-:----1

On the number line above, the segment from 0 to 1 has been divided into fifths, as indicated by the large tick marks, and also into sevenths, as indicated by the small tick marks. What is the LEAST possible distance between any two of the tick marks?
(A)1/70
(B)1/35
(C)2/35
(D)1/12
(E)1/7

I have no idea where to start. Guys please help!
Top
Join the discussion
Source: — Problem Solving |
Master | Next Rank: 500 Posts
Posts: 122
Joined: Fri May 22, 2009 10:38 pm
Thanked: 8 times
GMAT Score:700

by rah_pandey » Mon Jul 13, 2009 2:44 am
take lcm and solve

the nos are 1/5,2/5,3/5,4/5,5/5
1/7,2/7,3/7....7/7

take LCM and have a common denominator so that it is easy to compare

7/35,14/35,21/35....
5/35,10/35,15/35...

min is 1/35...I hope it is clear.
Top
Join the discussion
Legendary Member
Posts: 876
Joined: Thu Apr 10, 2008 8:14 am
Thanked: 13 times

by ketkoag » Mon Jul 13, 2009 3:17 am
yes 1/35 is min.. same approach..
Top
Join the discussion
Junior | Next Rank: 30 Posts
Posts: 25
Joined: Sat Nov 28, 2009 10:20 pm
GMAT Score:570

by jnbimmer » Mon Dec 21, 2009 3:47 pm
the distance would be 7/35 - 5 /35 ?

Thanks
Top
Join the discussion
User avatar
Senior | Next Rank: 100 Posts
Posts: 38
Joined: Mon Dec 28, 2009 10:55 amFollowed by: 1 member

by avaluxe » Tue May 25, 2010 9:40 am
@jnbimmer - No, the answer is 1/35. If you calculate out all the fractions of fifths and sevenths with an LCM of 35, you'll find that 3/7=15/35 and 2/5=14/35. The difference between these is is 1/35.

I'll admit that I got this wrong on my practice test last night and found this thread while looking for an explanation. I was on the right track but didn't calculate all of them and compare them all together.
Top
Join the discussion
User avatar
GMAT Instructor
Posts: 1052
Joined: Fri May 21, 2010 1:30 amFollowed by: 98 members
Thanked: 335 times

by Patrick_GMATFix » Tue May 25, 2010 9:59 am
As others have mentioned, rewriting fractions with a common denominator is key. Put everything into thirty-fifths. In general if you have to compare or order fractions, it makes sense to put them over a common denominator so that you can focus on comparing the numerators

For this question, the detailed and video solutions can be seen at GMATPrep question 1194

Welcome avaluxe.

Best of luck,
-Patrick
Top
Join the discussion
Legendary Member
Posts: 610
Joined: Fri Jan 15, 2010 12:33 amFollowed by: 2 members
Thanked: 47 times

by kstv » Tue May 25, 2010 5:04 pm
Though the Q is about dividing the segment 0 to 1, is fifths (1/5) and sevenths (1/7) it is same as dividing the the segment 0 to 35 (LCM of 7&5) in 5 and 7 parts.

Integers are easier to handle than fractions.

Then the five points are 0------- 7------- 14------- 21------- 28 -------35
and the seven points are 0----- 5-----10-----15-----20-----25-----30-----35

the least dist i.e 1 unit occcurs at two places between 20 - 21 and 14-15
This is similar to the explanation in the video mentioned above.
Top
Join the discussion