Last visit was: 19 Nov 2025, 04:55 It is currently 19 Nov 2025, 04:55
Close
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
Your Progress

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
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Close
Request Expert Reply
Confirm Cancel
Sub 505 Level|   Arithmetic|                           
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 19 Nov 2025
Posts: 105,384
Own Kudos:
Given Kudos: 99,977
Products:
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 105,384
Kudos: 778,201
 [15]
3
Kudos
Add Kudos
12
Bookmarks
Bookmark this Post
avatar
thac
Joined: 29 Dec 2015
Last visit: 28 Feb 2016
Posts: 8
Own Kudos:
8
 [2]
Given Kudos: 1
GPA: 2.8
Posts: 8
Kudos: 8
 [2]
2
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
nipunjain14
Joined: 07 May 2015
Last visit: 12 Aug 2017
Posts: 151
Own Kudos:
Given Kudos: 21
Location: India
GMAT 1: 660 Q48 V31
GPA: 3
GMAT 1: 660 Q48 V31
Posts: 151
Kudos: 83
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
leonidbasin1
Joined: 16 Jan 2016
Last visit: 20 Feb 2017
Posts: 18
Own Kudos:
Given Kudos: 29
Location: United States (CA)
Leonid: B
Concentration: Operations, General Management
GPA: 3.6
WE:Operations (Other)
Posts: 18
Kudos: 5
Kudos
Add Kudos
Bookmarks
Bookmark this Post
nipunjain14
bc = 4- 3 = 1
cd= 6-1 = 5

Ans:E

How did you get the second part (CD = 6-1 = 5) ?

Thanks,
Leon
User avatar
nipunjain14
Joined: 07 May 2015
Last visit: 12 Aug 2017
Posts: 151
Own Kudos:
83
 [3]
Given Kudos: 21
Location: India
GMAT 1: 660 Q48 V31
GPA: 3
GMAT 1: 660 Q48 V31
Posts: 151
Kudos: 83
 [3]
2
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
leonidbasin1
nipunjain14
bc = 4- 3 = 1
cd= 6-1 = 5

Ans:E

How did you get the second part (CD = 6-1 = 5) ?

Thanks,
Leon

BC = AC- AB = 4 - 3 = 1
CD = BD - BC = 6 -1 = 5

Hope this is now clear.
User avatar
diegocml
Joined: 22 Apr 2016
Last visit: 22 Jun 2018
Posts: 122
Own Kudos:
126
 [1]
Given Kudos: 392
Status:On a 600-long battle
Location: Hungary
Concentration: Accounting, Leadership
Schools: Erasmus '19
GMAT 1: 410 Q18 V27
GMAT 2: 490 Q35 V23
Schools: Erasmus '19
GMAT 2: 490 Q35 V23
Posts: 122
Kudos: 126
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
Points A, B, C, and D, in that order, lie on a line. If AB = 3 cm, AC = 4 cm, and BD = 6 cm, what is CD, in centimeters?

(A) 1
(B) 2
(C) 3
(D) 4
(E) 5

Given: The points are in order from A to D.
Given: Distance A to B = 3cm, Distance A to C = 4cm, Distance B to D = 6cm

Just draw a line:

A-----B-----C-----D
A--3--B--1--C--5--D

OA
User avatar
HasnainAfxal
Joined: 06 Sep 2018
Last visit: 12 Mar 2022
Posts: 126
Own Kudos:
Given Kudos: 72
Location: Pakistan
Concentration: Finance, Operations
GPA: 2.87
WE:Engineering (Other)
Products:
Posts: 126
Kudos: 65
Kudos
Add Kudos
Bookmarks
Bookmark this Post
AC-AB=BS
3-2=1
BD-BC=CD
6-1=5

ANSWER E
User avatar
Kinshook
User avatar
Major Poster
Joined: 03 Jun 2019
Last visit: 19 Nov 2025
Posts: 5,794
Own Kudos:
Given Kudos: 161
Location: India
GMAT 1: 690 Q50 V34
WE:Engineering (Transportation)
Products:
GMAT 1: 690 Q50 V34
Posts: 5,794
Kudos: 5,509
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
Points A, B, C, and D, in that order, lie on a line. If AB = 3 cm, AC = 4 cm, and BD = 6 cm, what is CD, in centimeters?

(A) 1
(B) 2
(C) 3
(D) 4
(E) 5

Points A, B, C, and D, in that order, lie on a line. If AB = 3 cm, AC = 4 cm, and BD = 6 cm, what is CD, in centimeters?

A-----------B-------------C--------------D
----3------- --------------6-------------
-------------4-------------

CD = AB + BD - AC = 3 + 6 -4 = 9 -4 =5

IMO E
avatar
almogsr
Joined: 17 Jun 2019
Last visit: 18 Apr 2020
Posts: 22
Own Kudos:
Given Kudos: 30
Location: Israel
Concentration: Technology, Leadership
GPA: 3.95
WE:Engineering (Computer Hardware)
Products:
Posts: 22
Kudos: 6
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Nice as a warm up question, thanks!

Posted from my mobile device
User avatar
ueh55406
Joined: 19 Dec 2020
Last visit: 31 Aug 2021
Posts: 149
Own Kudos:
Given Kudos: 316
Posts: 149
Kudos: 48
Kudos
Add Kudos
Bookmarks
Bookmark this Post
--------A------B-------C-------D---

mark the values as you read the question:

AB is 3, AC is 4, (BC=AC-AB) meaning BC is 1

BD is 6, (CD=BD-BC) as we know BC is 1, thus, CD is 5.
User avatar
MBAHOUSE
User avatar
MBA House Admissions Consultant
Joined: 26 May 2022
Last visit: 23 Apr 2024
Posts: 337
Own Kudos:
Expert
Expert reply
Posts: 337
Kudos: 92
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Since points A, B, C, and D lie on a line in that order, you can consider the segments as follows:

AB + BC = AC
3 cm + BC = 4 cm
BC = 4 cm - 3 cm
BC = 1 cm

Now, since points B, C, and D are collinear, you can use the fact that BD = BC + CD:

BD = BC + CD
6 cm = 1 cm + CD
CD = 6 cm - 1 cm
CD = 5 cm

So, CD is 5 centimeters.
User avatar
charlie-23
Joined: 22 Jul 2023
Last visit: 20 Sep 2024
Posts: 41
Own Kudos:
Given Kudos: 14
Location: India
Concentration: Entrepreneurship, Finance
Posts: 41
Kudos: 20
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
Points A, B, C, and D, in that order, lie on a line. If AB = 3 cm, AC = 4 cm, and BD = 6 cm, what is CD, in centimeters?

(A) 1
(B) 2
(C) 3
(D) 4
(E) 5
BC = 4-3=1
CD = 6 -1 =5
User avatar
Vibhatu
Joined: 18 May 2021
Last visit: 19 Nov 2025
Posts: 183
Own Kudos:
Given Kudos: 186
Posts: 183
Kudos: 51
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
Points A, B, C, and D, in that order, lie on a line. If AB = 3 cm, AC = 4 cm, and BD = 6 cm, what is CD, in centimeters?

(A) 1
(B) 2
(C) 3
(D) 4
(E) 5

Bunuel question can be tricky if someone ask that A B C D can be in any format in the line, then what is the difference between minimum and maximum possible distance of CD ??
Moderators:
Math Expert
105383 posts
Tuck School Moderator
805 posts