What is the length of line segment AB? All / s are equal, : GMAT Data Sufficiency (DS)
Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

 It is currently 27 Feb 2017, 11:34

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# What is the length of line segment AB? All / s are equal,

Author Message
TAGS:

### Hide Tags

Manager
Joined: 18 Aug 2011
Posts: 60
Followers: 1

Kudos [?]: 37 [0], given: 6

What is the length of line segment AB? All / s are equal, [#permalink]

### Show Tags

31 Aug 2011, 01:03
1
This post was
BOOKMARKED
00:00

Difficulty:

55% (hard)

Question Stats:

50% (01:39) correct 50% (00:49) wrong based on 42 sessions

### HideShow timer Statistics

What is the length of line segment AB? All /s are equal, all /s too.
All lines that meet are perpendicular.

1) / = 4
2) / = 2

Source: Barron's

[Reveal] Spoiler:
2 is definitely sufficient since you can add the 3 vertical lines on the left side (=6) and subtract the one on the right to calculate the length of /.
But how is 1 sufficient?
[Reveal] Spoiler: OA

Attachments

geometrie.png [ 4.85 KiB | Viewed 2219 times ]

Intern
Joined: 30 Jul 2010
Posts: 1
Followers: 0

Kudos [?]: 0 [0], given: 0

### Show Tags

31 Aug 2011, 19:40
The length of the vertical green line is equal to lengths of 2 vertical red lines. Therefore the length of the vertical green line is 2*2 = 4.
Intern
Joined: 31 Aug 2011
Posts: 4
Followers: 0

Kudos [?]: 0 [0], given: 0

### Show Tags

31 Aug 2011, 19:41
The 2 vertical red lines directly opposite the vertical green ie 2/(red line) = 4 ** 4/2 = 2
/ Red line = 2
Senior Manager
Joined: 09 Feb 2011
Posts: 285
Concentration: General Management, Social Entrepreneurship
Schools: HBS '14 (A)
GMAT 1: 770 Q50 V47
Followers: 14

Kudos [?]: 190 [0], given: 13

### Show Tags

31 Aug 2011, 19:59
If you know the length of red line, through the diagram you can know the length of vertical green line as it is equal to two vertical red lines. this will be same as horizontal green line and hence length of AB can be found.
Similarly, if you know the length of green line, you can find length of red line and hence AB

Each alone is sufficient
Manager
Joined: 13 Apr 2010
Posts: 173
Location: singapore
Followers: 3

Kudos [?]: 39 [0], given: 25

### Show Tags

31 Aug 2011, 19:59
+1 for D
Red line is half of green line.
_________________

Regards,
Nagesh
My GMAT Study Plan: http://gmatclub.com/forum/my-gmat-study-plan-112833.html
Idioms List : http://gmatclub.com/forum/gmat-idioms-104283.html?hilit=idioms#p813231
--------------------------------------
Consider Kudos if you like my posts

Math Forum Moderator
Joined: 20 Dec 2010
Posts: 2021
Followers: 162

Kudos [?]: 1742 [1] , given: 376

### Show Tags

01 Sep 2011, 01:45
1
KUDOS
Berbatov wrote:
What is the length of line segment AB? All /s are equal, all /s too.
All lines that meet are perpendicular.

1) / = 4
2) / = 2

Source: Barron's

[Reveal] Spoiler:
2 is definitely sufficient since you can add the 3 vertical lines on the left side (=6) and subtract the one on the right to calculate the length of /.
But how is 1 sufficient?

3R=1G+1R
2R=1G
Knowing either R or G gives the answer.

Ans: "D"
_________________
Intern
Affiliations: IEEE, IAB
Joined: 09 Aug 2011
Posts: 15
Mustafa: Golam
Followers: 1

Kudos [?]: 7 [0], given: 2

### Show Tags

09 Sep 2011, 21:06
Kudos to fluke.
Visual inspection suggest, for length of AB, both 1) & 2) is required.
_________________

*´¨)
¸.•´¸.•*´¨) ¸.•*¨)
(¸.•´ (¸.• *Mustafa Golam,'.',.

GMAT Club Legend
Joined: 09 Sep 2013
Posts: 13990
Followers: 592

Kudos [?]: 168 [0], given: 0

Re: What is the length of line segment AB? All / s are equal, [#permalink]

### Show Tags

16 Jan 2016, 13:36
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
Re: What is the length of line segment AB? All / s are equal,   [#permalink] 16 Jan 2016, 13:36
Similar topics Replies Last post
Similar
Topics:
2 If each of the segments marked on the board above is of equal length, 1 31 Aug 2016, 04:41
27 In the diagram, what is the length of AB? 25 05 Feb 2012, 16:30
11 What is the length of the chord AB 8 29 Jan 2012, 22:52
23 What is the length of segment BC? 30 14 Feb 2010, 10:33
47 What is the length of segment BC? 46 08 May 2008, 20:28
Display posts from previous: Sort by