It is currently 26 Jun 2017, 04:09

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Of the 800 employees in a certain company, 70% have serviced

Author Message
TAGS:

### Hide Tags

Manager
Joined: 18 Dec 2011
Posts: 106
Of the 800 employees in a certain company, 70% have serviced [#permalink]

### Show Tags

04 Feb 2012, 13:24
2
This post was
BOOKMARKED
00:00

Difficulty:

(N/A)

Question Stats:

90% (02:20) correct 10% (00:01) wrong based on 24 sessions

### HideShow timer Statistics

Of the 800 employees in a certain company, 70% have serviced more than 10 years. A number of y of those who have serviced more than 10 years will retire and no fresh employees join in. When is y if the 10 years employees become 60% of the total employees?

[Reveal] Spoiler:

Last edited by Bunuel on 04 Feb 2012, 13:29, edited 1 time in total.
Edited the question
Math Expert
Joined: 02 Sep 2009
Posts: 39695

### Show Tags

04 Feb 2012, 13:28
2
KUDOS
Expert's post
5
This post was
BOOKMARKED
arps wrote:
Of the 800 employees in a certain company, 70% have serviced more than 10 years. A number of y of those who have serviced more than 10 years will retire and no fresh employees join in. When is y if the 10 years employees become 60% of the total employees?

Ans 200

Step by step:

$$0.7*800=560$$ employees have serviced more than 10 years;

We are told that after $$y$$ of those employees leave the company the # of employees who have serviced more than 10 years ($$560-y$$) become 60% of a new total, which will be $$800-y$$, so: $$0.6*(800-y)=(560-y)$$ --> $$y=200$$.

Hope it's clear.
_________________
Manager
Status: MBA Aspirant
Joined: 12 Jun 2010
Posts: 176
Location: India
WE: Information Technology (Investment Banking)
Re: Of the 800 employees in a certain company, 70% have serviced [#permalink]

### Show Tags

05 Feb 2012, 04:19
Ans is 200 employees
let y employees retire so now 560-y employees remain. So total no of employees becomes 800-y
560-y/800-y = 60/100
on solving we get y =200
Senior Manager
Joined: 13 Aug 2012
Posts: 464
Concentration: Marketing, Finance
GPA: 3.23
Re: Of the 800 employees in a certain company, 70% have serviced [#permalink]

### Show Tags

02 Dec 2012, 00:10
1
KUDOS
Of the 800 employees in a certain company, 70% have serviced more than 10 years. A number of y of those who have serviced more than 10 years will retire and no fresh employees join in. What is y if the 10 years employees become 60% of the total employees?

Solution:

TOTAL 10 YRS
Original: 800 560
New: 800-y 560-y

560-y = .6 (800 -y)
560-y = 480 - .6y
80 = .4y
800/4 = y
y= 200

_________________

Impossible is nothing to God.

SVP
Status: The Best Or Nothing
Joined: 27 Dec 2012
Posts: 1857
Location: India
Concentration: General Management, Technology
WE: Information Technology (Computer Software)
Of the 800 employees in a certain company, 70% have serviced [#permalink]

### Show Tags

19 Jun 2014, 03:36
Total Employees = 800

70% = 560

> than 10 Yrs ......... Others ............ Total

560 ..........................240 ..................... 800

Total y employees retire; new figures would be

560-y ................................. 240 ....................... 800-y

Given that post retirement of y employees; > than 10yrs employees would be 60% of total

This also means that the other employees are 40% of the total (Reason behind this step is to have the variable y only at one side of the equation)

Setting up the equation

$$240 = \frac{40}{100} (800-y)$$

y = 200

ARPS: Can you please provide the OA for this question?
_________________

Kindly press "+1 Kudos" to appreciate

Math Expert
Joined: 02 Sep 2009
Posts: 39695
Re: Of the 800 employees in a certain company, 70% have serviced [#permalink]

### Show Tags

19 Jun 2014, 03:45
PareshGmat wrote:
Total Employees = 800

70% = 560

> than 10 Yrs ......... Others ............ Total

560 ..........................240 ..................... 800

Total y employees retire; new figures would be

560-y ................................. 240 ....................... 800-y

Given that post retirement of y employees; > than 10yrs employees would be 60% of total

This also means that the other employees are 40% of the total (Reason behind this step is to have the variable y only at one side of the equation)

Setting up the equation

$$240 = \frac{40}{100} (800-y)$$

y = 200

ARPS: Can you please provide the OA for this question?

The OA is 200. It's given under the spoiler in the original post.
_________________
GMAT Club Legend
Joined: 09 Sep 2013
Posts: 15978
Re: Of the 800 employees in a certain company, 70% have serviced [#permalink]

### Show Tags

27 Aug 2015, 10:53
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
GMAT Club Legend
Joined: 09 Sep 2013
Posts: 15978
Re: Of the 800 employees in a certain company, 70% have serviced [#permalink]

### Show Tags

11 Nov 2016, 09:39
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
Math Forum Moderator
Status: QA & VA Forum Moderator
Joined: 11 Jun 2011
Posts: 2893
Location: India
GPA: 3.5
Re: Of the 800 employees in a certain company, 70% have serviced [#permalink]

### Show Tags

11 Nov 2016, 11:59
arps wrote:
Of the 800 employees in a certain company, 70% have serviced more than 10 years. A number of y of those who have serviced more than 10 years will retire and no fresh employees join in. When is y if the 10 years employees become 60% of the total employees?

[Reveal] Spoiler:

Total employees = 800

More than 10 years = 560 ; Less than/Upto 10 years = 140

$$\frac{560 - y}{800-y} = \frac{60}{100}$$

Or, $$\frac{560 - y}{800-y} = \frac{3}{5}$$

Or, 2800 - 5y = 2400 - 3y

Or, 400 = 2y

Or, y =200

Hence, answer will be y =200....

_________________

Thanks and Regards

Abhishek....

PLEASE FOLLOW THE RULES FOR POSTING IN QA AND VA FORUM AND USE SEARCH FUNCTION BEFORE POSTING NEW QUESTIONS

How to use Search Function in GMAT Club | Rules for Posting in QA forum | Writing Mathematical Formulas |Rules for Posting in VA forum | Request Expert's Reply ( VA Forum Only )

Director
Joined: 18 Oct 2014
Posts: 908
Location: United States
GMAT 1: 660 Q49 V31
GPA: 3.98
Re: Of the 800 employees in a certain company, 70% have serviced [#permalink]

### Show Tags

11 Nov 2016, 12:08
arps wrote:
Of the 800 employees in a certain company, 70% have serviced more than 10 years. A number of y of those who have serviced more than 10 years will retire and no fresh employees join in. When is y if the 10 years employees become 60% of the total employees?

[Reveal] Spoiler:

Number of employees serving more than 10 years is changing; However, number of employees working less than 10 years is not changing. So we can take that into account for easy calculations.

30% of 800 (employees working less than 10 years)= 240

After y employees left, the number of employees working less than 10 years increased to 40%.

If 40% is 240, than 100%= 600

There is difference of 200 employees between then and now (800-600). Hence 200 is the answer.
_________________

I welcome critical analysis of my post!! That will help me reach 700+

Manager
Joined: 29 May 2016
Posts: 118
Re: Of the 800 employees in a certain company, 70% have serviced [#permalink]

### Show Tags

12 Nov 2016, 01:00
Bunuel wrote:
arps wrote:
Of the 800 employees in a certain company, 70% have serviced more than 10 years. A number of y of those who have serviced more than 10 years will retire and no fresh employees join in. When is y if the 10 years employees become 60% of the total employees?

Ans 200

Step by step:

$$0.7*800=560$$ employees have serviced more than 10 years;

We are told that after $$y$$ of those employees leave the company the # of employees who have serviced more than 10 years ($$560-y$$) become 60% of a new total, which will be $$800-y$$, so: $$0.6*(800-y)=(560-y)$$ --> $$y=200$$.

Hope it's clear.

please tell me when I went wrong... my understanding is bit different on this question.
70% are more than 10 years ..... 30% are 10 and less than 10 years.
70%of 800 = 560
30%of 800 = 240

Now Y are going to retire and these Y come in 70% group, resulting in something ... what is that .. 240 becomes 60% of the total now
Here total has to be the decreased number .... then only 60% possible ...

so 60% of (800-y) = 240 ..... why are we taking 560-y as 60%
Re: Of the 800 employees in a certain company, 70% have serviced   [#permalink] 12 Nov 2016, 01:00
Similar topics Replies Last post
Similar
Topics:
11 70% of the employees in a multinational corporation have VCD players, 7 03 Dec 2016, 04:07
6 At a small company, 70 percent of the employees are women, and 60 perc 6 13 Jul 2015, 02:58
10 At a certain resort, each of the 39 food service employees 9 30 Apr 2017, 16:26
3 Of the 800 employees of Company X, 70 percent have been with 5 01 May 2015, 02:42
7 Of the 800 employees of company X, 70% have been with the 7 23 Jul 2015, 02:04
Display posts from previous: Sort by