Last visit was: 23 Apr 2026, 12:14 It is currently 23 Apr 2026, 12:14
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
septwibowo
User avatar
Joined: 27 Dec 2016
Last visit: 05 Nov 2025
Posts: 189
Own Kudos:
196
 [9]
Given Kudos: 285
Concentration: Marketing, Social Entrepreneurship
Schools: Yale '21 HBS '21 Darden '21 Wharton '21
GPA: 3.65
WE:Marketing (Education)
Products:
My Reviews
Schools: Yale '21 HBS '21 Darden '21 Wharton '21
Posts: 189
Kudos: 196
 [9]
During an experiment, the temperature of a liquid was measured several 29 Oct 2017, 07:10
Kudos
Add Kudos
9
Bookmarks
Bookmark this Post
00:00
Start Timer
Pause Timer
Resume Timer
Show Answer
Hide
Show
History
A
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:

93% (01:31) correct 7% (01:43) wrong based on 490 sessions

History

Date
Time
Result
Not Attempted Yet
During an experiment, the temperature of a liquid was measured several times. The temperatures, in degrees Celsius, listed in increasing order, are 21, 25, x , 40, and 50. If the arithmetic mean of these temperatures is equal to the median, what is the value of x?

A. 34
B. 35
C. 36
D. 37
E. 38

PS07486
ShowHide Answer
Official Answer
A
Every tricky question should trigger a follow up quiz. Build that habit with GMAT Club Forum Quiz →.
User avatar
chetan2u
User avatar
GMAT Expert
Joined: 02 Aug 2009
Last visit: 22 Apr 2026
Posts: 11,229
Own Kudos:
45,002
 [4]
Given Kudos: 335
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: 11,229
Kudos: 45,002
 [4]
During an experiment, the temperature of a liquid was measured several 29 Oct 2017, 07:15
2
Kudos
Add Kudos
2
Bookmarks
Bookmark this Post
septwibowo
During an experiment, the temperature of a liquid was measured several times. The temperatures, in degree Celsius, listed in increasing order, are 21, 25, x, 40, and 50. If the arithmetic mean of these temperatures is equal to the median, what is the value of x?

A. 34
B. 35
C. 36
D. 37
E. 38
Show more


clearly x is the MEDIAN, so x is also the mean..

\(\frac{21+25+x+40+50}{5}=x.......136+x=5x....4x=136...x=34\)

A
User avatar
Abhishek009
User avatar
Board of Directors
Joined: 11 Jun 2011
Last visit: 17 Dec 2025
Posts: 5,903
Own Kudos:
5,452
 [2]
Given Kudos: 463
Status:QA & VA Forum Moderator
Location: India
GPA: 3.5
WE:Business Development (Commercial Banking)
Posts: 5,903
Kudos: 5,452
 [2]
During an experiment, the temperature of a liquid was measured several 29 Oct 2017, 07:46
1
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
septwibowo
During an experiment, the temperature of a liquid was measured several times. The temperatures, in degree Celsius, listed in increasing order, are 21, 25, x, 40, and 50. If the arithmetic mean of these temperatures is equal to the median, what is the value of x?

A. 34
B. 35
C. 36
D. 37
E. 38
Show more

\(\frac{21 + 25 + x + 40 + 50}{5} = x\)

Or, \(x + 136 = 5x\)

Or, \(4x = 136\)

Or, \(x =34\), answer will be (A)
User avatar
gps5441
User avatar
Joined: 04 May 2014
Last visit: 03 Feb 2018
Posts: 106
Own Kudos:
82
 [4]
Given Kudos: 126
Location: India
WE:Sales (Mutual Funds and Brokerage)
Posts: 106
Kudos: 82
 [4]
During an experiment, the temperature of a liquid was measured several 23 Nov 2017, 05:43
4
Kudos
Add Kudos
Bookmarks
Bookmark this Post
The sum has to be divisible by 5. We have 21 in the set which is not divisible by 5 rest all are divisible by 5. Only answer choice which when added to 21 is 34 to make both divisible by 5.
User avatar
ScottTargetTestPrep
User avatar
Target Test Prep Representative
Joined: 14 Oct 2015
Last visit: 23 Apr 2026
Posts: 22,283
Own Kudos:
26,531
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: 22,283
Kudos: 26,531
During an experiment, the temperature of a liquid was measured several 31 Oct 2019, 18:29
Kudos
Add Kudos
Bookmarks
Bookmark this Post
septwibowo
During an experiment, the temperature of a liquid was measured several times. The temperatures, in degree Celsius, listed in increasing order, are 21, 25, x, 40, and 50. If the arithmetic mean of these temperatures is equal to the median, what is the value of x?

A. 34
B. 35
C. 36
D. 37
E. 38
Show more


We can create the equation:

(21 + 25 + x + 40 + 50)/5 = x

136 + x = 5x

136 = 4x

34 = x

Answer: A
User avatar
Basshead
User avatar
Joined: 09 Jan 2020
Last visit: 07 Feb 2024
Posts: 907
Own Kudos:
323
Given Kudos: 431
Location: United States
Posts: 907
Kudos: 323
During an experiment, the temperature of a liquid was measured several 23 Nov 2020, 10:21
Kudos
Add Kudos
Bookmarks
Bookmark this Post
septwibowo
During an experiment, the temperature of a liquid was measured several times. The temperatures, in degree Celsius, listed in increasing order, are 21, 25, x, 40, and 50. If the arithmetic mean of these temperatures is equal to the median, what is the value of x?

A. 34
B. 35
C. 36
D. 37
E. 38
Show more

\(mean = median\)

\(21 + 25 + 40 + 50 + x = 5x\)

\(136 + x = 5x\)

\(136 = 4x\)

\(34 = x\)

Answer is A.
User avatar
CrackverbalGMAT
User avatar
Major Poster
Joined: 03 Oct 2013
Last visit: 22 Apr 2026
Posts: 4,846
Own Kudos:
9,181
Given Kudos: 226
Affiliations: CrackVerbal
Location: India
Expert
Expert reply
Posts: 4,846
Kudos: 9,181
During an experiment, the temperature of a liquid was measured several 24 Nov 2020, 01:42
Kudos
Add Kudos
Bookmarks
Bookmark this Post
CONCEPT: Mean=sum of observations / Number of observations
Median= Middle value among a set of numbers

Mean here = 21+25+x+40+50 / 5
Median= x

According to the question;
21+25+x+40+50 / 5 = x
=>136+x=5x
=>x=34 (A)

Hope this helps. Keep studying:)
Devmitra Sen
User avatar
ArnauG
User avatar
Joined: 23 Dec 2022
Last visit: 14 Oct 2023
Posts: 284
Own Kudos:
43
Given Kudos: 199
Posts: 284
Kudos: 43
During an experiment, the temperature of a liquid was measured several 28 May 2023, 14:27
Kudos
Add Kudos
Bookmarks
Bookmark this Post
To find the value of x, we need to determine the median of the temperatures. Since the arithmetic mean is equal to the median, the median will be the average of the two middle values when the temperatures are arranged in ascending order.

The temperatures in increasing order: 21, 25, x, 40, 50

Since we have an odd number of temperatures (5 in total), the median will be the middle value, which is x.

Therefore, x is the median of the temperatures.

To find the arithmetic mean, we sum up all the temperatures and divide by the total count:

Mean = (21 + 25 + x + 40 + 50) / 5

Since the mean is equal to the median, we can set up the equation:

(21 + 25 + x + 40 + 50) / 5 = x

Now we solve for x:

21 + 25 + x + 40 + 50 = 5x
136 + x = 5x
136 = 4x
x = 136 / 4 = 34

Therefore, the value of x is (A) 34.
User avatar
DanTheGMATMan
User avatar
Joined: 02 Oct 2015
Last visit: 22 Apr 2026
Posts: 380
Own Kudos:
267
Given Kudos: 9
Expert
Expert reply
Posts: 380
Kudos: 267
During an experiment, the temperature of a liquid was measured several 15 May 2024, 06:20
Kudos
Add Kudos
Bookmarks
Bookmark this Post
­Listing the temperatures in ascending order was a huge plus:

­
User avatar
bumpbot
User avatar
Non-Human User
Joined: 09 Sep 2013
Last visit: 04 Jan 2021
Posts: 38,964
Own Kudos:
1,117
Posts: 38,964
Kudos: 1,117
During an experiment, the temperature of a liquid was measured several 24 Aug 2025, 05:06
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
109783 posts
Krunaal
Tuck School Moderator
853 posts