Last visit was: 28 Apr 2026, 14:22 It is currently 28 Apr 2026, 14:22
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
Events & Promotions
Back to Forum
Create Topic
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 28 Apr 2026
Posts: 109,950
Own Kudos:
811,780
 [1]
Given Kudos: 105,927
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: 109,950
Kudos: 811,780
 [1]
In a group of people solicited by a charity, 30 percent contributed $ 02 Nov 2017, 23:10
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
00:00
Start Timer
Pause Timer
Resume Timer
Show Answer
Hide
Show
History
E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

25% (medium)

Question Stats:

79% (01:48) correct 21% (01:52) wrong based on 178 sessions

History

Date
Time
Result
Not Attempted Yet
In a group of people solicited by a charity, 30 percent contributed $40 each, 45 percent contributed $20 each, and the rest contributed $12 each. What percentage of the total contributed came from people who gave $40?

(A) 25%
(B) 30%
(C) 40%
(D) 45%
(E) 50%
ShowHide Answer
Official Answer
E
User avatar
pushpitkc
User avatar
Joined: 26 Feb 2016
Last visit: 19 Feb 2025
Posts: 2,800
Own Kudos:
6,238
 [2]
Given Kudos: 47
Location: India
GPA: 3.12
Posts: 2,800
Kudos: 6,238
 [2]
In a group of people solicited by a charity, 30 percent contributed $ 03 Nov 2017, 00:03
1
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
Bunuel
In a group of people solicited by a charity, 30 percent contributed $40 each, 45 percent contributed $20 each, and the rest contributed $12 each. What percentage of the total contributed came from people who gave $40?

(A) 25%
(B) 30%
(C) 40%
(D) 45%
(E) 50%
Show more

Let the total number of people solicited by a charity be x

If 30% contributed 40$ each, their contribution will be 0.3x * 40 = 12x
Similarly, as 45% contributed 20$ each, their contribution will be 0.45x * 20 = 9x
The remainder of the people contributed 12$ each.
The contribution of the remaining 0.25x will be 0.25x * 12 = 3x

Since the total contribution is 12x+9x+3x = 24x,

the percentage of those who contributed 40$ each is \(\frac{12x}{24x}\) or 50%(Option E)
User avatar
generis
User avatar
Senior SC Moderator
Joined: 22 May 2016
Last visit: 18 Jun 2022
Posts: 5,258
Own Kudos:
37,737
Given Kudos: 9,464
Expert
Expert reply
Posts: 5,258
Kudos: 37,737
In a group of people solicited by a charity, 30 percent contributed $ 03 Nov 2017, 10:04
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
In a group of people solicited by a charity, 30 percent contributed $40 each, 45 percent contributed $20 each, and the rest contributed $12 each. What percentage of the total contributed came from people who gave $40?

(A) 25%
(B) 30%
(C) 40%
(D) 45%
(E) 50%
Show more
Let the # of people = 100
30 percent = 30 persons gave $40
45 percent = 45 persons gave $20
= 75 of total 100 people
"The rest [of the people]" = 25 persons, who gave $12

Total donated:
30($40) + 45($20) + 25($12) =
($1,200 + $900 + $300) = $2,400

Percentage of the total contributed that came from people who gave $40 (the 30 people):

\(\frac{$1,200}{$2,400} * 100 = 50\) percent

Answer E
User avatar
Abhishek009
User avatar
Board of Directors
Joined: 11 Jun 2011
Last visit: 17 Dec 2025
Posts: 5,902
Own Kudos:
5,457
Given Kudos: 463
Status:QA & VA Forum Moderator
Location: India
GPA: 3.5
WE:Business Development (Commercial Banking)
Posts: 5,902
Kudos: 5,457
In a group of people solicited by a charity, 30 percent contributed $ 03 Nov 2017, 11:11
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
In a group of people solicited by a charity, 30 percent contributed $40 each, 45 percent contributed $20 each, and the rest contributed $12 each. What percentage of the total contributed came from people who gave $40?

(A) 25%
(B) 30%
(C) 40%
(D) 45%
(E) 50%
Show more

Let total population be 100

So, percentage of the total contributed came from people who gave $40 = \(\frac{30*40}{(30*40)+(45*20)+(12*25)}\)\(*100\) = \(\frac{1200}{2400}\) \(*100\) = \(50\)%

Answer will be (E)
User avatar
ScottTargetTestPrep
User avatar
Target Test Prep Representative
Joined: 14 Oct 2015
Last visit: 28 Apr 2026
Posts: 22,294
Own Kudos:
26,547
Given Kudos: 302
Status:Founder & CEO
Affiliations: Target Test Prep
Location: United States (CA)
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 22,294
Kudos: 26,547
In a group of people solicited by a charity, 30 percent contributed $ 06 Nov 2017, 18:00
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
In a group of people solicited by a charity, 30 percent contributed $40 each, 45 percent contributed $20 each, and the rest contributed $12 each. What percentage of the total contributed came from people who gave $40?

(A) 25%
(B) 30%
(C) 40%
(D) 45%
(E) 50%
Show more

We can create the following expression:

(0.3 x 40)/(0.3 x 40 + 0.45 x 20 + 0.25 x 12)

12/(12 + 9 + 3) = 12/24 = 1/2 = 50%

Alternate Solution:

Instead of using percentages, let’s consider the percentages as numbers of people. Thus, 30 people contributed $40 each, 45 people contributed $20 each, and 25 people contributed $12 each.

Now let’s calculate the total amount contributed:

30(40) + 45(20) + 25(12) = 2400

Those contributing $40 each made a total contribution of 30(40) = 1200. Thus, their percentage of the total will be 1200/2400 x 100%, or 50%.

Answer: E
User avatar
GMATinsight
User avatar
Major Poster
Joined: 08 Jul 2010
Last visit: 28 Apr 2026
Posts: 6,979
Own Kudos:
16,929
Given Kudos: 128
Status:GMAT/GRE Tutor l Admission Consultant l On-Demand Course creator
Location: India
GMAT: QUANT+DI EXPERT
Schools: IIM (A) ISB '24
GMAT 1: 750 Q51 V41
WE:Education (Education)
Products:
My Reviews
Expert
Expert reply
Schools: IIM (A) ISB '24
GMAT 1: 750 Q51 V41
Posts: 6,979
Kudos: 16,929
In a group of people solicited by a charity, 30 percent contributed $ 10 May 2020, 01:39
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
In a group of people solicited by a charity, 30 percent contributed $40 each, 45 percent contributed $20 each, and the rest contributed $12 each. What percentage of the total contributed came from people who gave $40?

(A) 25%
(B) 30%
(C) 40%
(D) 45%
(E) 50%
Show more

Let, total people = 100

30 contributed $40 so their contribution = 30*40 = 1200
45 contributed $20 so their contribution = 45*20 = 900
25 contributed $12 so their contribution = 25*12 = 300

Total Contribution = 1200+900+300 = $2400

Contribution of $40 contributor / Total Controbution = 1200/2400 = 1/2 = 50%

Answer: Option E
User avatar
bumpbot
User avatar
Non-Human User
Joined: 09 Sep 2013
Last visit: 04 Jan 2021
Posts: 38,987
Own Kudos:
1,119
Posts: 38,987
Kudos: 1,119
In a group of people solicited by a charity, 30 percent contributed $ 02 Feb 2025, 23:27
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Automated notice from GMAT Club BumpBot:

A member just gave Kudos to this thread, showing it’s still useful. I’ve bumped it to the top so more people can benefit. Feel free to add your own questions or solutions.

This post was generated automatically.
Moderators:
Bunuel
Math Expert
109950 posts
Krunaal
Tuck School Moderator
852 posts