Find all School-related info fast with the new School-Specific MBA Forum

It is currently 01 Sep 2014, 05:48

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Hanks Manufacturing recently conducted a survey of its

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
User avatar
Joined: 28 Jul 2011
Posts: 213
Followers: 0

Kudos [?]: 27 [0], given: 13

Hanks Manufacturing recently conducted a survey of its [#permalink] New post 03 Sep 2011, 11:50
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

67% (01:25) correct 33% (01:10) wrong based on 12 sessions
I think the word "regular" in question - "who do not drink regular coffee with cream" changes the meaning and should not be there.

Hanks Manufacturing recently conducted a survey of its employees. The results showed that of the n people who work at the company, 1/3 drink decaffeinated coffee, and the remainder drink regular coffee. Of those who do not drink decaf, 2/5 add cream to their coffee. Which of the expressions below accurately represents the number of employees who do not drink regular coffee with cream.

A. 2n/3
B. n/8
C. 4n/15
D. 11n/15
E. 13n/15
[Reveal] Spoiler: OA
1 KUDOS received
Manager
Manager
User avatar
Joined: 28 Jul 2011
Posts: 213
Followers: 0

Kudos [?]: 27 [1] , given: 13

Re: Equations and Inequalities Drill [#permalink] New post 04 Sep 2011, 07:18
1
This post received
KUDOS
thank you Karishma

I was reading this line "do not drink regular" to be decaf - and hence we need to find the employees drinking decaf with cream.
"Which of the expressions below accurately represents the number of employees who do not drink regular coffee with cream."
Manager
Manager
avatar
Joined: 16 May 2011
Posts: 205
Concentration: Finance, Real Estate
GMAT Date: 12-27-2011
WE: Law (Law)
Followers: 0

Kudos [?]: 30 [0], given: 37

GMAT ToolKit User GMAT Tests User
Re: Equations and Inequalities Drill [#permalink] New post 03 Sep 2011, 12:24
i believe it's D.
it said that 2/5*2/3n do drink Regular+Cream.

2/5*2/3= 4/15

so the rest (1-4/15) do not drink R+C which equals to 11/15
Expert Post
Veritas Prep GMAT Instructor
User avatar
Joined: 16 Oct 2010
Posts: 4691
Location: Pune, India
Followers: 1089

Kudos [?]: 4882 [0], given: 163

Re: Equations and Inequalities Drill [#permalink] New post 03 Sep 2011, 19:21
Expert's post
kuttingchai wrote:
I think the word "regular" in question - "who do not drink regular coffee with cream" changes the meaning and should not be there.

Hanks Manufacturing recently conducted a survey of its employees. The results showed that of the n people who work at the company, 1/3 drink decaffeinated coffee, and the remainder drink regular coffee. Of those who do not drink decaf, 2/5 add cream to their coffee. Which of the expressions below accurately represents the number of employees who do not drink regular coffee with cream.

A. 2n/3
B. n/8
C. 4n/15
D. 11n/15
E. 13n/15


The question is fine.

Decaffeinated coffee = 1/3
Regular coffee = 2/3

"Of those who do not drink decaf, 2/5 add cream to their coffee."
means 'of the regular drinkers, i.e. of the 2/3, 2/5 add cream'
Regular coffee drinkers who add cream = 2/5 * 2/3 = 4/15

The fraction that drinks 'regular coffee with cream' = 4/15
The fraction that does not drink 'regular coffee with cream' is the rest = 1 - 4/15 = 11/15
Number of people = 11n/15
_________________

Karishma
Veritas Prep | GMAT Instructor
My Blog

Save $100 on Veritas Prep GMAT Courses And Admissions Consulting
Enroll now. Pay later. Take advantage of Veritas Prep's flexible payment plan options.

Veritas Prep Reviews

Manager
Manager
avatar
Joined: 27 Dec 2011
Posts: 52
Followers: 0

Kudos [?]: 3 [0], given: 11

Re: Hanks Manufacturing recently conducted a survey of its [#permalink] New post 26 Dec 2012, 14:42
hi karishma,

Decaffeinated coffee = 1/3
Regular coffee = 2/3

"Of those who do not drink decaf, 2/5 add cream to their coffee."
means 'of the regular drinkers, i.e. of the 2/3, 2/5 add cream' that means 3/5 0f 2/3 don't add cream.
And the answer becomes = 3/5(2/3)= 2/5n

wats wrong with this approach?

thanks,

-K
Intern
Intern
avatar
Joined: 04 Nov 2012
Posts: 1
Followers: 0

Kudos [?]: 0 [0], given: 8

Re: Hanks Manufacturing recently conducted a survey of its [#permalink] New post 26 Dec 2012, 18:17
Which of the expressions below accurately represents the number of employees who do not drink regular coffee with cream.
I agree with the others as the question is asking for the # of DECAF coffee drinkers who don't use cream. Since the stem doesn't provide enough information, I would think you cannot determine. Is my thought process making sense?

hi karishma,

Decaffeinated coffee = 1/3
Regular coffee = 2/3

"Of those who do not drink decaf, 2/5 add cream to their coffee."
means 'of the regular drinkers, i.e. of the 2/3, 2/5 add cream' that means 3/5 0f 2/3 don't add cream.
And the answer becomes = 3/5(2/3)= 2/5n

wats wrong with this approach?
Hey Kartik,

My question about your approach is that the stem doesn't say that 2/5 of the total# surveyed but only accounts for the regular coffee drinkers. then how is this helping you answer the question about the 1/3 decaf drinkers? Just curious
Expert Post
Veritas Prep GMAT Instructor
User avatar
Joined: 16 Oct 2010
Posts: 4691
Location: Pune, India
Followers: 1089

Kudos [?]: 4882 [0], given: 163

Re: Hanks Manufacturing recently conducted a survey of its [#permalink] New post 26 Dec 2012, 23:41
Expert's post
kartik222 wrote:
hi karishma,

Decaffeinated coffee = 1/3
Regular coffee = 2/3

"Of those who do not drink decaf, 2/5 add cream to their coffee."
means 'of the regular drinkers, i.e. of the 2/3, 2/5 add cream' that means 3/5 0f 2/3 don't add cream.
And the answer becomes = 3/5(2/3)= 2/5n

wats wrong with this approach?

thanks,

-K


Your approach is correct for one part of the answer.

Of the regular coffee drinkers, 3/5 do not add cream so we get that (2/5)n drink regular coffee without cream. But is this the fraction they are looking for?
They are looking for 'the number of employees who do not drink 'regular coffee with cream.'
i.e. the number of employee who drink either 'decaf' or 'regular coffee without cream' or 'some other non-regular coffee' or 'no coffee'.
We are looking for people who do not drink 'regular coffee with cream'.

The question tells us that there are no people who drink 'some other non-regular coffee' or 'no coffee'.
You calculated that no. of people who drink 'regular coffee without cream' = (2/5)n
No of people who drink decaf = (1/3)n

No of people who do not drink 'regular coffee with cream' = (1/3)n + (2/5)n = (11/15)n
_________________

Karishma
Veritas Prep | GMAT Instructor
My Blog

Save $100 on Veritas Prep GMAT Courses And Admissions Consulting
Enroll now. Pay later. Take advantage of Veritas Prep's flexible payment plan options.

Veritas Prep Reviews

Re: Hanks Manufacturing recently conducted a survey of its   [#permalink] 26 Dec 2012, 23:41
    Similar topics Author Replies Last post
Similar
Topics:
A recent survey conducted in the New Homes magazine rohitgoel15 7 26 Jan 2012, 18:29
13 Experts publish their posts in the topic A manufacturer conducted a survey to determine how many peop 144144 12 10 Dec 2010, 11:32
A manufacture conducted a survey to determine how many balboa 3 12 Jul 2008, 08:54
A manufacturer conducted a survey to determine how many rishi2377 1 02 Nov 2007, 08:25
A manufacturer conducted a survey to determine how many apollo168 8 13 Aug 2006, 03:52
Display posts from previous: Sort by

Hanks Manufacturing recently conducted a survey of its

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.