Last visit was: 24 Apr 2026, 01:29 It is currently 24 Apr 2026, 01:29
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: 23 Apr 2026
Posts: 109,802
Own Kudos:
810,912
Given Kudos: 105,868
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: 109,802
Kudos: 810,912
The are 15 girls and 15 boys in the first grade classroom. No girls ar 03 Jul 2020, 05:32
Kudos
Add Kudos
Bookmarks
Bookmark this Post
00:00
Start Timer
Pause Timer
Resume Timer
Show Answer
Hide
Show
History
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

5% (low)

Question Stats:

95% (00:56) correct 5% (02:19) wrong based on 57 sessions

History

Date
Time
Result
Not Attempted Yet
The are 15 girls and 15 boys in the first grade classroom. No girls are to be added or removed from the classroom. What is the least number of the boys that can be removed from the class so that the ratio of girls to boys is 5 to 3 ?


(A) 4
(B) 5
(C) 6
(D) 7
(E) 8
ShowHide Answer
Official Answer
C
User avatar
rajatchopra1994
User avatar
Joined: 16 Feb 2015
Last visit: 22 Jun 2024
Posts: 1,052
Own Kudos:
1,307
Given Kudos: 30
Location: United States
Posts: 1,052
Kudos: 1,307
The are 15 girls and 15 boys in the first grade classroom. No girls ar 03 Jul 2020, 05:35
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Explanation:
15 boys & 15 Girls
Current ratio 1:1
Required Ratio = 5:3
No girls can be removed.
15/9, means 6 boys have to be removed

IMO-C
User avatar
v12345
User avatar
Joined: 01 Mar 2015
Last visit: 19 Jan 2026
Posts: 398
Own Kudos:
1,117
Given Kudos: 44
Location: India
Posts: 398
Kudos: 1,117
The are 15 girls and 15 boys in the first grade classroom. No girls ar 03 Jul 2020, 05:37
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
The are 15 girls and 15 boys in the first grade classroom. No girls are to be added or removed from the classroom. What is the least number of the boys that can be removed from the class so that the ratio of girls to boys is 5 to 3 ?


(A) 4
(B) 5
(C) 6
(D) 7
(E) 8
Show more

Girls = 15
Boys = 15
Required ratio of girls to boys = 5 to 3 = 15 to 9
Therefore, boys to be removed are 15-9 = 6

Hence, OA is (C).
User avatar
Archit3110
User avatar
Major Poster
Joined: 18 Aug 2017
Last visit: 23 Apr 2026
Posts: 8,628
Own Kudos:
5,190
Given Kudos: 243
Status:You learn more from failure than from success.
Location: India
Concentration: Sustainability, Marketing
GMAT Focus 1: 545 Q79 V79 DI73
GMAT Focus 2: 645 Q83 V82 DI81
GPA: 4
WE:Marketing (Energy)
Products:
GMAT Club Tests Forum Quiz
GMAT Focus 2: 645 Q83 V82 DI81
Posts: 8,628
Kudos: 5,190
The are 15 girls and 15 boys in the first grade classroom. No girls ar 03 Jul 2020, 09:11
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
The are 15 girls and 15 boys in the first grade classroom. No girls are to be added or removed from the classroom. What is the least number of the boys that can be removed from the class so that the ratio of girls to boys is 5 to 3 ?


(A) 4
(B) 5
(C) 6
(D) 7
(E) 8
Show more

given info
target ratio of girls : boys and no girl is to be removed or added and find least number of boys that should be removed to get ratio girls:boys ; 5:3
solve
15/15-x= 5/3
solve for x = 6
option C
User avatar
VERBAL1
User avatar
Joined: 18 Jun 2020
Last visit: 10 Jul 2022
Posts: 174
Own Kudos:
161
Given Kudos: 151
Location: India
Concentration: Marketing, Sustainability
Schools: Cass '21 LBS '22 Cambridge '22
Schools: Cass '21 LBS '22 Cambridge '22
Posts: 174
Kudos: 161
The are 15 girls and 15 boys in the first grade classroom. No girls ar 03 Jul 2020, 09:30
Kudos
Add Kudos
Bookmarks
Bookmark this Post
15 boys & 15 Girls
Hence, current ratio 1:1
Required Ratio = 5:3
Let the no. Of boys removed to achieve desired ratio be x.

15/15-x= 5/3
solve for x = 6

OA: C

Posted from my mobile device
User avatar
Kinshook
User avatar
Major Poster
Joined: 03 Jun 2019
Last visit: 24 Apr 2026
Posts: 5,987
Own Kudos:
5,858
Given Kudos: 163
Location: India
Schools: HBS '26 CBS '26 Wharton '26
GMAT 1: 690 Q50 V34
WE:Engineering (Transportation)
Products:
My Reviews
Schools: HBS '26 CBS '26 Wharton '26
GMAT 1: 690 Q50 V34
Posts: 5,987
Kudos: 5,858
The are 15 girls and 15 boys in the first grade classroom. No girls ar 03 Jul 2020, 10:38
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
The are 15 girls and 15 boys in the first grade classroom. No girls are to be added or removed from the classroom. What is the least number of the boys that can be removed from the class so that the ratio of girls to boys is 5 to 3 ?


(A) 4
(B) 5
(C) 6
(D) 7
(E) 8
Show more

Given: The are 15 girls and 15 boys in the first grade classroom. No girls are to be added or removed from the classroom.
Asked: What is the least number of the boys that can be removed from the class so that the ratio of girls to boys is 5 to 3 ?

Since girls = 15
Let the boys to be removed = x boys

15 / (15-x) = 5/3
15 - x = 9
x = 6

IMO C
User avatar
GMATWhizTeam
User avatar
GMATWhiz Representative
Joined: 07 May 2019
Last visit: 17 Mar 2026
Posts: 3,374
Own Kudos:
2,193
Given Kudos: 70
Location: India
GMAT 1: 740 Q50 V41
GMAT 2: 760 Q51 V40
Expert
Expert reply
GMAT 2: 760 Q51 V40
Posts: 3,374
Kudos: 2,193
The are 15 girls and 15 boys in the first grade classroom. No girls ar 04 Jul 2020, 01:48
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
The are 15 girls and 15 boys in the first grade classroom. No girls are to be added or removed from the classroom. What is the least number of the boys that can be removed from the class so that the ratio of girls to boys is 5 to 3 ?


(A) 4
(B) 5
(C) 6
(D) 7
(E) 8
Show more

Solution


    • There are 15 girls and 15 boys in the classroom.
    • Let us assume that b boys are removed from the class.
      o So, number of boys left in the classroom = 15 – b.
    • Now, \(\frac{15}{15-b} = \frac{5}{3} ⟹\frac{3}{15-b} = \frac{1}{3} ⟹ 15 – b = 9 ⟹ b = 6\)
Thus, the correct answer is Option C.
User avatar
Mahammad2020
User avatar
Joined: 11 Mar 2020
Last visit: 08 Mar 2022
Posts: 17
Own Kudos:
34
Given Kudos: 36
Posts: 17
Kudos: 34
The are 15 girls and 15 boys in the first grade classroom. No girls ar 04 Jul 2020, 02:34
Kudos
Add Kudos
Bookmarks
Bookmark this Post
1:1= 15:15

Must be
5g:3B

Therefore

3boy :5 Girl
6boy : 10 girl
9 boy :15 Girl

15 boy - 9 boy = 6 boy

Answer is 6
Moderators:
Bunuel
Math Expert
109802 posts
Krunaal
Tuck School Moderator
853 posts