MBA Spotlight Fair Join 40 AdComs at Virtual MBA + Masters Fair! Register to Reserve Your Spot | See Schedule | Win Prizes
close

It is currently 27 Nov 2021, 21:52
Register
GRE Prep Club Tests
Decision Tracker
My Rewards
New comers' posts
New posts
Unanswered

Close

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

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 GRE 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
PREVIOUS TOPIC
NEXT TOPIC
At Didymus Corporation there are just two classes of employe
10 posts Go to First Unread Post
Print view
NEW TOPIC
POST REPLY
Downloads
My Bookmarks
Reviews
Tags :
Find Similar Topics  About 

Show Tags
Hide Tags

avatar
rajlal
Intern
Intern
Joined: 22 Aug 2018
Posts: 29
At Didymus Corporation there are just two classes of employe [#permalink] New post  Updated on: 12 Jan 2019, 06:28
1
00:00

Question Stats:

81% (01:48) correct 18% (03:35) wrong based on 16 sessions

Hide Show timer Statistics

At Didymus Corporation there are just two classes of employees: Silver and Gold. The average salary of Gold is $56000 higher than that of silver employees. If there are 120 silver employees and 160 gold employees then the average salary for the company is higher than the average salary for the silver by

A) 8000
B) 15000
C) 25000
D) 32000
E) 36000
ShowHide Answer
Official Answer
Official Answer and Stats are available only to registered users. Register/Login.

Originally posted by rajlal on 20 Sep 2018, 07:33.
Last edited by chetan2u on 12 Jan 2019, 06:28, edited 1 time in total.
Formatted the question
User avatar
D
Carcass
Verbal Expert
Joined: 18 Apr 2015
Posts: 18683
GRE 1: Q160 V160
Re: At Didymus Corporation there are just two classes of employe [#permalink] New post  20 Sep 2018, 07:50
Expert Reply
The ratio of silver employees to gold employees is

silver : gold = 120:160 = 12:16 = 3:4

If we divide the distance between the two averages by 7, then silver will be “four parts” away from the total average, and gold will be “three parts” away.

The difference is $56,000, so that divided by 7 is $8000. That’s one part. Four parts would be $32,000, which has to be the distance from the silver average to the total average.

C
_________________
GRE Prep Club OFFICIAL Android App

New to the GRE, and GRE CLUB Forum?
GRE: All you do need to know about the GRE Test | GRE Prep Club for the GRE Exam - The Complete FAQ
Search GRE Specific Questions | Download Vault
Posting Rules: QUANTITATIVE | VERBAL
FREE Resources: GRE Prep Club Official LinkTree Page | Free GRE Materials - Where to get it!! (2020)
Free GRE Prep Club Tests: Got 20 Kudos? You can get Free GRE Prep Club Tests
GRE Prep Club on : Facebook | Instagram

Questions' Banks and Collection:
ETS: ETS Free PowerPrep 1 & 2 All 320 Questions Explanation. | ETS All Official Guides
3rd Party Resource's: All Quant Questions Collection | All Verbal Questions Collection
Books: All GRE Best Books
Scores: The GRE average score at Top 25 Business Schools 2020 Ed. | How to study for GRE retake and score HIGHER - (2020)
How is the GRE Score Calculated -The Definitive Guide (2021)
Tests: GRE Prep Club Tests | FREE GRE Practice Tests [Collection] - New Edition (2021)
Vocab: GRE Prep Club Official Vocabulary Lists for the GRE (2021)
Signature Read More
avatar
rajlal
Intern
Intern
Joined: 22 Aug 2018
Posts: 29
Re: At Didymus Corporation there are just two classes of employe [#permalink] New post  20 Sep 2018, 11:32
Carcass wrote:
The ratio of silver employees to gold employees is

silver : gold = 120:160 = 12:16 = 3:4

If we divide the distance between the two averages by 7, then silver will be “four parts” away from the total average, and gold will be “three parts” away.

The difference is $56,000, so that divided by 7 is $8000. That’s one part. Four parts would be $32,000, which has to be the distance from the silver average to the total average.

C

How can we take the algebraic approach?
User avatar
D
Carcass
Verbal Expert
Joined: 18 Apr 2015
Posts: 18683
GRE 1: Q160 V160
Re: At Didymus Corporation there are just two classes of employe [#permalink] New post  20 Sep 2018, 11:33
Expert Reply
it is cumbersome. You should always try to use the fastest approach.

Regards
_________________
GRE Prep Club OFFICIAL Android App

New to the GRE, and GRE CLUB Forum?
GRE: All you do need to know about the GRE Test | GRE Prep Club for the GRE Exam - The Complete FAQ
Search GRE Specific Questions | Download Vault
Posting Rules: QUANTITATIVE | VERBAL
FREE Resources: GRE Prep Club Official LinkTree Page | Free GRE Materials - Where to get it!! (2020)
Free GRE Prep Club Tests: Got 20 Kudos? You can get Free GRE Prep Club Tests
GRE Prep Club on : Facebook | Instagram

Questions' Banks and Collection:
ETS: ETS Free PowerPrep 1 & 2 All 320 Questions Explanation. | ETS All Official Guides
3rd Party Resource's: All Quant Questions Collection | All Verbal Questions Collection
Books: All GRE Best Books
Scores: The GRE average score at Top 25 Business Schools 2020 Ed. | How to study for GRE retake and score HIGHER - (2020)
How is the GRE Score Calculated -The Definitive Guide (2021)
Tests: GRE Prep Club Tests | FREE GRE Practice Tests [Collection] - New Edition (2021)
Vocab: GRE Prep Club Official Vocabulary Lists for the GRE (2021)
Signature Read More
User avatar
sandy
Retired Moderator
Joined: 07 Jun 2014
Posts: 4805
GRE 1: Q167 V156
WE:Business Development (Energy and Utilities)
Re: At Didymus Corporation there are just two classes of employe [#permalink] New post  20 Sep 2018, 15:53
1
Expert Reply
rajlal wrote:
How can we take the algebraic approach?


Assume a salary for Silver employees=x

Now then salary of gold employees = x + $56,000.


Average salary of of comapny is = \(\frac{160 (x+56000)+ 120x}{160+120}\)

Difference between comapany average and silver =\(\frac{160 (x+56000)+ 120x}{160+120}-x\)=\(\frac{160 (x+56000)+ 120x -(160+120)x}{160+120}\)= \(\frac{160 (56000)}{160+120}=32000\)
_________________
Sandy
If you found this post useful, please let me know by pressing the Kudos Button

Try our free Online GRE Test
Signature Read More
avatar
AE
Director
Director
Joined: 09 Nov 2018
Posts: 505
Re: At Didymus Corporation there are just two classes of employe [#permalink] New post  10 Jan 2019, 21:02
rajlal wrote:
At Didymus Corporation there are just two classes of employees: Silver and Gold. The average salary of Gold is $56000 higher than that of silver employees. If there are 120 silver employees and 160 gold employees then the average salary for the company is higher than the average salary for the silver?

A) 8000
B) 15000
C) 25000
D) 32000
E) 36000

Please fix typo
should be then the average salary for the company is how much higher than the average salary for the silver employees
avatar
AE
Director
Director
Joined: 09 Nov 2018
Posts: 505
Re: At Didymus Corporation there are just two classes of employe [#permalink] New post  10 Jan 2019, 21:21
MAGOOSH OFFICIAL SOLUTION wrote:
We can use this if we pick a value for the average salary for the silver employees. It actually doesn’t matter what value we pick, because averages will fall in the same relative places regardless of whether all the individual values are slid up and down the number line. The easiest value by far to pick is zero. Let’s pretend that the silver folks make $0, and the gold folks make $56. (I divided dollars by 1000 for simplicity).

Now, we also have to simplify the numbers of employees. We could reduce the number of employees as long as we preserve the relative ratio.

silver : gold = 120:160 = 12:16 = 3:4

So everything would be the same if we just had 3 silver employees and 4 gold employees. OK, now find the sums.

silver = 3*0 = 0

gold = 4*56

I am not even going to bother to multiply that out, because we know that the next step is to divide by 7, the total number of employees.

total average = 4*56/7 = 4*8 = 32

The average salary is $32,000, which is $32,000 higher than the average for the silver employees. Answer = (C)
avatar
rajlal
Intern
Intern
Joined: 22 Aug 2018
Posts: 29
Re: At Didymus Corporation there are just two classes of employe [#permalink] New post  12 Jan 2019, 04:03
AE wrote:
rajlal wrote:
At Didymus Corporation there are just two classes of employees: Silver and Gold. The average salary of Gold is $56000 higher than that of silver employees. If there are 120 silver employees and 160 gold employees then the average salary for the company is higher than the average salary for the silver?

A) 8000
B) 15000
C) 25000
D) 32000
E) 36000

Please fix typo
should be then the average salary for the company is how much higher than the average salary for the silver employees



The question is correct from the source. If you have any problem I expect you to take it with Magoosh team and not bicker it with me.

Bye bye
User avatar
D
Carcass
Verbal Expert
Joined: 18 Apr 2015
Posts: 18683
GRE 1: Q160 V160
Re: At Didymus Corporation there are just two classes of employe [#permalink] New post  12 Jan 2019, 04:35
Expert Reply
Guys no need to pick some wasteful dull fights.

Often the questions from NON-official resources have typos.

As well, those from OFFICIAL resources.

As such, it is just a question. Wed o have on the board countless questions more. Move on.

Thank you
_________________
GRE Prep Club OFFICIAL Android App

New to the GRE, and GRE CLUB Forum?
GRE: All you do need to know about the GRE Test | GRE Prep Club for the GRE Exam - The Complete FAQ
Search GRE Specific Questions | Download Vault
Posting Rules: QUANTITATIVE | VERBAL
FREE Resources: GRE Prep Club Official LinkTree Page | Free GRE Materials - Where to get it!! (2020)
Free GRE Prep Club Tests: Got 20 Kudos? You can get Free GRE Prep Club Tests
GRE Prep Club on : Facebook | Instagram

Questions' Banks and Collection:
ETS: ETS Free PowerPrep 1 & 2 All 320 Questions Explanation. | ETS All Official Guides
3rd Party Resource's: All Quant Questions Collection | All Verbal Questions Collection
Books: All GRE Best Books
Scores: The GRE average score at Top 25 Business Schools 2020 Ed. | How to study for GRE retake and score HIGHER - (2020)
How is the GRE Score Calculated -The Definitive Guide (2021)
Tests: GRE Prep Club Tests | FREE GRE Practice Tests [Collection] - New Edition (2021)
Vocab: GRE Prep Club Official Vocabulary Lists for the GRE (2021)
Signature Read More
avatar
chetan2u
Supreme Moderator
Joined: 01 Nov 2017
Posts: 371
Re: At Didymus Corporation there are just two classes of employe [#permalink] New post  12 Jan 2019, 06:27
Expert Reply
rajlal wrote:
At Didymus Corporation there are just two classes of employees: Silver and Gold. The average salary of Gold is $56000 higher than that of silver employees. If there are 120 silver employees and 160 gold employees then the average salary for the company is higher than the average salary for the silver BY ?

A) 8000
B) 15000
C) 25000
D) 32000
E) 36000


you can use weighted average method too...

........gold.............silver
average..x............x+56000...
weights... 160.............120..

so company'S AVERAGE = \(x+56000*\frac{120}{120+160}=x+56000*\frac{120}{280}=x+200*120=x+24000\)

difference in silver and company's average = (x+56000)-(x+24000)=x+56000-x-24000=32000
_________________
Some useful Theory.
1. Arithmetic and Geometric progressions : https://greprepclub.com/forum/progressions-arithmetic-geometric-and-harmonic-11574.html#p27048
2. Effect of Arithmetic Operations on fraction : https://greprepclub.com/forum/effects-of-arithmetic-operations-on-fractions-11573.html?sid=d570445335a783891cd4d48a17db9825
3. Remainders : https://greprepclub.com/forum/remainders-what-you-should-know-11524.html
4. Number properties : https://greprepclub.com/forum/number-property-all-you-require-11518.html
5. Absolute Modulus and Inequalities : https://greprepclub.com/forum/absolute-modulus-a-better-understanding-11281.html
Signature Read More
GRE Prep Club Bot
gmatclubot
[#permalink]
NEW TOPIC
POST REPLY
Downloads
My Bookmarks
Reviews
Moderators:
GreenlightTestPrep
GRE Instructor
5195 posts
amorphous
Moderator
731 posts
KarunMendiratta
Moderator
1351 posts
BrushMyQuant
Moderator
329 posts
rx10
Moderator
1242 posts
Ks1859
Moderator
555 posts
RA911
ScholarDen Representative
40 posts
motion2020
Moderator
325 posts

cron

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Main navigation

Partners

GRE Resources

www.ets.org/gre | About | Terms and Conditions and Privacy Policy | GRE Prep Club Rules | Contact