NEW HERE? LEARN MORE
closeclose
It is currently 27 Sep 2023, 19:01
Register
GMAT Club Tests
Decision Tracker
My Rewards
New posts
New comers' posts

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

Of the 50 employees of a certain company, 30 earn an average (arithmet

7 posts Go to First Unread Post
Print view
NEW TOPIC
POST REPLY
Downloads
My Bookmarks
Reviews
SORT BY:
Date
Kudos
User avatar
L
Bunuel
Math Expert
Joined: 02 Sep 2009
Posts: 89492
CAT Tests Forum Quiz Mode
Of the 50 employees of a certain company, 30 earn an average (arithmet [#permalink] New post  14 Oct 2019, 09:19
2
Bookmarks
Expert Reply
Quiz Dashboard Attempt only this question Same topic and source Same topic and difficulty Same source and difficulty Random Chronological Reverse chronological Learn more
00:00
A
B
C
D
E

Difficulty:

5% (low)

Question Stats:

92% (01:32) correct 8% (01:31) wrong based on 161 sessions

Hide Show timer Statistics

Of the 50 employees of a certain company, 30 earn an average (arithmetic mean) salary of $30,000, 15 earn an average salary of $40,000, and 5 earn an average salary of $60,000. What is the average salary earned by the employees of this company?

A. $30,000
B. $36,000
C. $40,000
D. $45,000
E. $50,000
ShowHide Answer
Official Answer
Official Answer and Stats are available only to registered users. Register/Login.

_________________
New to the GMAT CLUB Forum?

My Signature Questions' Collection:


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics
Signature Read More
Quiz Dashboard Attempt only this question Same topic and source Same topic and difficulty Same source and difficulty Random Chronological Reverse chronological Learn more
avatar
B
jatin24680
Intern
Intern
Joined: 10 Jul 2019
Posts: 4
Re: Of the 50 employees of a certain company, 30 earn an average (arithmet [#permalink] New post  14 Oct 2019, 09:25
1
Bookmarks
(30*30000 + 15*40000 + 5*60000) / 30+15+5 = 36000

Posted from my mobile device
User avatar
L
siddharthkapoor
GMAT Club Reviews PM Intern
Joined: 10 Apr 2018
Posts: 537
Location: India
Schools: ISB'22 (D)
GMAT 1: 680 Q48 V34
GPA: 3.3
Reviews Badge
Of the 50 employees of a certain company, 30 earn an average (arithmet [#permalink] New post  14 Oct 2019, 09:43
1
Kudos
Bunuel wrote:
Of the 50 employees of a certain company, 30 earn an average (arithmetic mean) salary of $30,000, 15 earn an average salary of $40,000, and 5 earn an average salary of $60,000. What is the average salary earned by the employees of this company?

A. $30,000
B. $36,000
C. $40,000
D. $45,000
E. $50,000


Sum of salaries of all employees= (30*30000+15*40000+5*60000)
Total number of employees=30+15+5
Thus, average salary= \(\frac{30*30000+15*40000+5*60000}{30+15+5}\)=36000

Therefore, the correct answer is option B.
User avatar
L
daagh
GMAT Club Legend
GMAT Club Legend
Joined: 19 Feb 2007
Status: enjoying
Posts: 5277
Location: India
WE:Education (Education)
Re: Of the 50 employees of a certain company, 30 earn an average (arithmet [#permalink] New post  14 Oct 2019, 11:52
Expert Reply
Top Contributor
Ans: B; (30*30000)+ (15*40000)+(5*60000) = 1800000/50 = $36000
_________________
Thank you Daagh for your time on GMAT Club and all your contributions! Thank you for everything you did!
Your work will remain a great tribute to you here on GMAT Club!
-bb
Signature Read More
avatar
B
prashantdhamija
Intern
Intern
Joined: 15 Aug 2013
Posts: 5
Of the 50 employees of a certain company, 30 earn an average (arithmet [#permalink] New post  14 Oct 2019, 12:09
1
Kudos
This question tests the concept of weighted averages. The average salary will be:

Total Salary Given/Total number of employees.

Total Salary Given = 30000 * 30 + 40000 * 15 + 60000 * 5 = $1800000
Total employees = 50
Average Salary = 1800000/50 = $36000

Answer Choice (B) is correct.
avatar
B
bkastan
Intern
Intern
Joined: 25 Jul 2017
Posts: 17
Re: Of the 50 employees of a certain company, 30 earn an average (arithmet [#permalink] New post  14 Oct 2019, 17:08
Make it easier and divide all of the salaries by 1000 to make the numbers smaller.

(30)(30)+(15)(40)+(5)(60) = 1800.

1800/50 = 36.

NOW add the zeros back and you get $36,000

Tip: 15 x 40 is the same as 40(10+5) or 400 + 200.

Posted from my mobile device
User avatar
L
ScottTargetTestPrep
Target Test Prep Representative
Joined: 14 Oct 2015
Status:Founder & CEO
Affiliations: Target Test Prep
Posts: 17978
Location: United States (CA)
Re: Of the 50 employees of a certain company, 30 earn an average (arithmet [#permalink] New post  27 Oct 2022, 09:04
Expert Reply
Bunuel wrote:
Of the 50 employees of a certain company, 30 earn an average (arithmetic mean) salary of $30,000, 15 earn an average salary of $40,000, and 5 earn an average salary of $60,000. What is the average salary earned by the employees of this company?

A. $30,000
B. $36,000
C. $40,000
D. $45,000
E. $50,000


We can create the following equation:

WA = (30 x 30,000 + 15 x 40,000 + 5 x 60,000)/50

Dividing each term by 50, we are left with:

WA = 30 x 600 + 15 x 800 + 5 x 1200

WA = 18,000 + 12,000 + 6,000

WA = 36,000

Answer: B
_________________
Signature Read More
GMAT Club Bot
gmatclubot
Re: Of the 50 employees of a certain company, 30 earn an average (arithmet [#permalink]
27 Oct 2022, 09:04
NEW TOPIC
POST REPLY
Downloads
My Bookmarks
Reviews
Moderators:
Bunuel
Math Expert
89492 posts
yashikaaggarwal
Senior Moderator - Masters Forum
3136 posts

cron

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne
Main navigation
GMAT Resources
Partners
MBA Resources
www.gmac.com|www.mba.com | | GMAT Club Rules | Terms and Conditions