Last visit was: 17 May 2026, 20:09 It is currently 17 May 2026, 20:09
Home
Messages
Tests
Schools
Events
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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel
Back to Forum
Create Topic
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 17 May 2026
Posts: 110,522
Own Kudos:
815,430
Given Kudos: 106,277
Products:
GMAT Club Tests Forum Quiz
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 110,522
Kudos: 815,430
A group of men promise to do a work in 14 days, but 6 of them do not 02 Feb 2021, 09:15
Kudos
Add Kudos
Bookmarks
Bookmark this Post
00:00
Start Timer
Pause Timer
Resume Timer
Show Answer
Hide
Show
History
B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

15% (low)

Question Stats:

85% (01:43) correct 15% (01:45) wrong based on 59 sessions

History

Date
Time
Result
Not Attempted Yet
A group of men promise to do a work in 14 days, but 6 of them do not turn up. If rest of the group do the work in 21 days, find the original number of men.

(A) 15
(B) 18
(C) 25
(D) 35
(E) 38
ShowHide Answer
Official Answer
B
User avatar
chetan2u
User avatar
GMAT Expert
Joined: 02 Aug 2009
Last visit: 16 May 2026
Posts: 11,239
Own Kudos:
45,197
 [1]
Given Kudos: 337
Status:Math and DI Expert
Location: India
Concentration: Human Resources, General Management
GMAT Focus 1: 735 Q90 V89 DI81
Products:
My Reviews
Expert
Expert reply
GMAT Focus 1: 735 Q90 V89 DI81
Posts: 11,239
Kudos: 45,197
 [1]
A group of men promise to do a work in 14 days, but 6 of them do not 02 Feb 2021, 20:20
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
A group of men promise to do a work in 14 days, but 6 of them do not turn up. If rest of the group do the work in 21 days, find the original number of men.

(A) 15
(B) 18
(C) 25
(D) 35
(E) 38
Show more

Let the number be x and x-6, and the days are 14 and 21. The ratio of men should be opposite of the days.
So \(\frac{x}{x-6}=\frac{21}{14}=\frac{3}{2}\)
\(2x=3x-18.......x=18\)

B
User avatar
KarishmaB
User avatar
Joined: 16 Oct 2010
Last visit: 13 May 2026
Posts: 16,465
Own Kudos:
79,641
 [1]
Given Kudos: 485
Location: Pune, India
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 16,465
Kudos: 79,641
 [1]
A group of men promise to do a work in 14 days, but 6 of them do not 02 Feb 2021, 23:28
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
A group of men promise to do a work in 14 days, but 6 of them do not turn up. If rest of the group do the work in 21 days, find the original number of men.

(A) 15
(B) 18
(C) 25
(D) 35
(E) 38
Show more

Ratio of time taken = 14:21 = 2:3
Ratio of rate required (men required) = 3:2
The difference of 1 is accounted for by 6 men. So multiplier is 6. Original number of men = 3*6 = 18.
Actually only 2*6 = 12 turned up.

Answer (B)

Check: https://www.gmatclub.com/forum/veritas-prep-resource-links-no-longer-available-399979.html#/2011/0 ... -problems/
avatar
anjanita
avatar
Joined: 14 May 2010
Last visit: 29 Jun 2022
Posts: 57
Own Kudos:
53
Given Kudos: 119
Location: India
Concentration: Strategy, Marketing
WE:Management Consulting (Consulting)
Posts: 57
Kudos: 53
A group of men promise to do a work in 14 days, but 6 of them do not 03 Feb 2021, 00:30
Kudos
Add Kudos
Bookmarks
Bookmark this Post
The answer is B. Please find below my explanation:

Let us assume that the original number of Men = x

Therefore, x*14 = (x-6)*21 ==> x=18
avatar
Akp880
avatar
Joined: 24 Mar 2019
Last visit: 08 Nov 2021
Posts: 192
Own Kudos:
151
Given Kudos: 196
Location: India
Concentration: Marketing, Operations
Schools: IIMA PGPX'23 IIM
WE:Operations (Aerospace and Defense)
Schools: IIMA PGPX'23 IIM
Posts: 192
Kudos: 151
A group of men promise to do a work in 14 days, but 6 of them do not 03 Feb 2021, 00:31
Kudos
Add Kudos
Bookmarks
Bookmark this Post
A group of men promise to do a work in 14 days, but 6 of them do not turn up. If rest of the group do the work in 21 days, find the original number of men.

(A) 15
(B) 18
(C) 25
(D) 35
(E) 38

Explanation:
let x men promised to do the work.Simply equate the man-days involved in the given work i.e

x men* 14 days=(x-6)*21 days
2x=(x-6)*3
x=18 men

Hence B is the correct answer.
Moderators:
Bunuel
Math Expert
110522 posts
Krunaal
Tuck School Moderator
852 posts