GRE Prep 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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
The average salary of one group having n number of employees is $32,00
[#permalink]
30 Sep 2024, 00:40
30 Sep 2024, 00:40
Expert Reply
4
Bookmarks
00:00
Question Stats:
63% (02:01) correct
36% (02:56) wrong based on 11 sessions
Hide Show timer Statistics
The average salary of one group having n number of employees is $32,000 and the average salary of another group having (n–1) number of employees is $33,000.
Quantity A |
Quantity B |
The average salary of all the \((2n–1)\) employees |
$32,500 |
- Part of the project: GRE Quant & Verbal ADVANCED Daily Challenge 2024 Edition - Gain 20 Kudos & Get FREE Access to GRE Prep Club TESTS
- Also replying to the unanswered questions
Re: The average salary of one group having n number of employees is $32,00
[#permalink]
10 Oct 2024, 05:51
10 Oct 2024, 05:51
Can someone please explain how B is the answer?
Re: The average salary of one group having n number of employees is $32,00
[#permalink]
10 Oct 2024, 08:49
10 Oct 2024, 08:49
Expert Reply
The average salary of the combined group is
\(n+(n-1)=2n+1\)
Now
\(\frac{32000*n+33000(n-1)}{n+(n-1)}\)
This average is more close to 32000 than 3000
The salary , in a nutshell, would be >32000 but < 32500
So B is the answer
PS: this is the concept of the weighted avergae
\(n+(n-1)=2n+1\)
Now
\(\frac{32000*n+33000(n-1)}{n+(n-1)}\)
This average is more close to 32000 than 3000
The salary , in a nutshell, would be >32000 but < 32500
So B is the answer
PS: this is the concept of the weighted avergae
