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

 It is currently 06 Jul 2015, 12:45

### 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

# GMAT Diagnostic Test Question 32

Author Message
Founder
Affiliations: AS - Gold, UA - Silver, HH-Diamond
Joined: 04 Dec 2002
Posts: 12822
Location: United States (WA)
GMAT 1: 750 Q49 V42
GPA: 3.5
WE: Information Technology (Hospitality and Tourism)
Followers: 2732

Kudos [?]: 13587 [1] , given: 3865

GMAT Diagnostic Test Question 32 [#permalink]  06 Jun 2009, 22:14
1
KUDOS
Expert's post
2
This post was
BOOKMARKED
GMAT Diagnostic Test Question 32
Field: word problems (mixture)
Difficulty: 700

A Food and Drug lab has two new samples: a 240 gram cup of drip coffee, which contains 124 mg of caffeine, and a 60 gram cup of espresso, containing 160 mg of caffeine. If a technician were to create a new 120 gram cup sample that contained 50% coffee and 50% espresso, how many mg of caffeine would the new drink contain?

A. 111
B. 121
C. 142
D. 191
E. 382
_________________

Founder of GMAT Club

Just starting out with GMAT? Start here... | Want to know your GMAT Score? Try GMAT Score Estimator
Need GMAT Book Recommendations? Best GMAT Books

Co-author of the GMAT Club tests

Have a blog? Feature it on GMAT Club!

GMAT Club Premium Membership - big benefits and savings

Last edited by bb on 29 Sep 2013, 20:33, edited 1 time in total.
Updated
 Kaplan Promo Code Knewton GMAT Discount Codes Veritas Prep GMAT Discount Codes
Current Student
Joined: 13 Jul 2009
Posts: 145
Location: Barcelona
Schools: SSE
Followers: 16

Kudos [?]: 323 [2] , given: 22

Re: GMAT Diagnostic Test Question 32 [#permalink]  18 Jul 2009, 10:42
2
KUDOS
In the PDF, the question doesn't mention "a new 120 gram cup sample", it just says "combine the two drinks"
and therefore is impossible to find the correct answer.
_________________

Performance: Gmat | Toefl
Contributions: The Idioms Test | All Geometry Formulas | Friendly Error Log | GMAT Analytics
MSc in Management: All you need to know | Student Lifestyle | Class Profiles

CIO
Joined: 02 Oct 2007
Posts: 1217
Followers: 93

Kudos [?]: 770 [1] , given: 334

Re: GMAT Diagnostic Test Question 32 [#permalink]  06 Jul 2009, 08:50
1
KUDOS
1
This post was
BOOKMARKED
Explanation:

A new 120 gram cup will contain 50% of coffee and 50% of espresso, that is 60 grams each. 60 grams of espresso contains 160 mg of caffeine, while 60 grams of drip coffee contains $$\frac{124}{4}=31$$ mg of caffeine. So, the new drink will contain $$31+160=191$$ mg of caffeine.
_________________

Welcome to GMAT Club!

Want to solve GMAT questions on the go? GMAT Club iPhone app will help.
Result correlation between real GMAT and GMAT Club Tests
Are GMAT Club Test sets ordered in any way?

Take 15 free tests with questions from GMAT Club, Knewton, Manhattan GMAT, and Veritas.

GMAT Club Premium Membership - big benefits and savings

Last edited by bb on 29 Sep 2013, 20:33, edited 1 time in total.
Updated
Intern
Joined: 06 Nov 2009
Posts: 4
Followers: 0

Kudos [?]: 1 [1] , given: 2

Re: GMAT Diagnostic Test Question 32 [#permalink]  27 Nov 2009, 22:28
1
KUDOS
I would like to suggest a quick and dirty solution.

a 240 gram cup of drip coffee, which contains 124 mg of caffeine,
We have (almost) a 2:1 ratio here

60 gram cup of espresso, containing 160 mg of caffeine.
Here we have (almost) a 1:2,5 ratio (if we compare mg of caffeine against gram of espresso).

120 gram, 50/50, thus would mean 60/2 + 60*2,5 = 180

knowing the right result should be a "bit" more than 180 and that the closest answer is 191, we can then assume that the right answer is 191.
Founder
Affiliations: AS - Gold, UA - Silver, HH-Diamond
Joined: 04 Dec 2002
Posts: 12822
Location: United States (WA)
GMAT 1: 750 Q49 V42
GPA: 3.5
WE: Information Technology (Hospitality and Tourism)
Followers: 2732

Kudos [?]: 13587 [0], given: 3865

Re: GMAT Diagnostic Test Question 32 [#permalink]  18 Jul 2009, 13:24
Expert's post
saruba wrote:
In the PDF, the question doesn't mention "a new 120 gram cup sample", it just says "combine the two drinks"
and therefore is impossible to find the correct answer.

Technically, we could assume the two drinks were mixed as long as one of them was exhausted, but I think that would not be GMAT-like.
_________________

Founder of GMAT Club

Just starting out with GMAT? Start here... | Want to know your GMAT Score? Try GMAT Score Estimator
Need GMAT Book Recommendations? Best GMAT Books

Co-author of the GMAT Club tests

Have a blog? Feature it on GMAT Club!

GMAT Club Premium Membership - big benefits and savings

BSchool Forum Moderator
Status: Enjoying Class
Joined: 06 Dec 2009
Posts: 234
Schools: Booth
Followers: 4

Kudos [?]: 73 [0], given: 23

Re: GMAT Diagnostic Test Question 32 [#permalink]  20 Dec 2009, 11:40
I'm not sure I would consider this a 700 level question. If all you are doing is dividing the coffee amount by 4 that seems more like <600 level. Perhaps if the mixture were something other than 50/50 where you had to divide the amount in the espresso or something but even then that doesn't seem that complicated.
_________________

If you find this post useful, please give me a kudos. Thanks!

[JB's Guide to Dressing for Interviews]

[Did you use a Admissions Consultant? Provide some feedback here!]

GMAT Club Premium Membership - big benefits and savings

Intern
Joined: 18 Nov 2009
Posts: 7
Followers: 0

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

Re: GMAT Diagnostic Test Question 32 [#permalink]  22 Dec 2009, 09:34
I agree the question seems too straightforward to be 700 level.

Just line up the two proportions

124 mg caffeine / 240g coffee and 160mg caffeine /60g of espresso

the new drink is x/120 and since the drink will comprise 50% coffee and 50% espresso
we'll have 60 grams of each so the amount of caffeine from the espresso remains the same and we reduce the coffee fraction to 31 mg of caffeine/ 60 g of coffee and add.

31/60 +160/60= 191 mg of caffeine so the answer is D
Manager
Joined: 27 Jan 2010
Posts: 149
Concentration: Strategy, Other
GMAT 1: Q V
GMAT 2: Q V
Followers: 7

Kudos [?]: 20 [0], given: 53

Re: GMAT Diagnostic Test Question 32 [#permalink]  04 Feb 2010, 19:30
Even I feel this should not be a 700 question. < 600 maybe. Thanks.
Intern
Joined: 07 Jul 2010
Posts: 18
WE 1: 5 years
Followers: 1

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

Re: GMAT Diagnostic Test Question 32 [#permalink]  26 May 2011, 04:48
@dzyubam- You guys are doing amazing job.
I need one suggestion as you so cooly give good explanation for every question.
I have realized i can solve any question of quant the only problem is when i m not able to understand it in first 30 seconds i panic. because of that i have messed up my first GMAT attempt. I was scoring 750 in prep tests and on the day of GMAT i scored 610 that may also be because i did not study for 3 months before that.
But the problem is I have the technique but i dont know why i do good on one day and worse on some other day.
The D day is coming soon.
Any suggestion by any one is welcomed.

HELP!!!!
CIO
Joined: 02 Oct 2007
Posts: 1217
Followers: 93

Kudos [?]: 770 [0], given: 334

Re: GMAT Diagnostic Test Question 32 [#permalink]  27 May 2011, 04:20
Hi and welcome to the Forum!

It seems that the most important task for you would be to stay calm and confident during your Test. Since you can solve the questions just fine, I suggest that you practice in conditions as close to the real GMAT as possible. More practice should do the trick.

I hope other regulars can provide some suggestions.
medha13 wrote:
@dzyubam- You guys are doing amazing job.
I need one suggestion as you so cooly give good explanation for every question.
I have realized i can solve any question of quant the only problem is when i m not able to understand it in first 30 seconds i panic. because of that i have messed up my first GMAT attempt. I was scoring 750 in prep tests and on the day of GMAT i scored 610 that may also be because i did not study for 3 months before that.
But the problem is I have the technique but i dont know why i do good on one day and worse on some other day.
The D day is coming soon.
Any suggestion by any one is welcomed.

HELP!!!!

_________________

Welcome to GMAT Club!

Want to solve GMAT questions on the go? GMAT Club iPhone app will help.
Result correlation between real GMAT and GMAT Club Tests
Are GMAT Club Test sets ordered in any way?

Take 15 free tests with questions from GMAT Club, Knewton, Manhattan GMAT, and Veritas.

GMAT Club Premium Membership - big benefits and savings

Intern
Joined: 02 Nov 2012
Posts: 36
Followers: 0

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

Re: GMAT Diagnostic Test Question 32 [#permalink]  22 Nov 2012, 04:57
<600 question it is, maybe in order to make it more difficult add some other components. So that you have to use the unknown multiplier.
Intern
Joined: 27 Jan 2014
Posts: 7
GMAT 1: 760 Q49 V43
Followers: 0

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

Re: GMAT Diagnostic Test Question 32 [#permalink]  05 Aug 2014, 01:10
bb wrote:
saruba wrote:
In the PDF, the question doesn't mention "a new 120 gram cup sample", it just says "combine the two drinks"
and therefore is impossible to find the correct answer.

Technically, we could assume the two drinks were mixed as long as one of them was exhausted, but I think that would not be GMAT-like.

I downloaded the PDF today and it doesnt mention the 120 g sample part . FYI
BTW you guys are absolutely amazing ! This site has been a lifesaver !

Cheers !
Re: GMAT Diagnostic Test Question 32   [#permalink] 05 Aug 2014, 01:10
Similar topics Replies Last post
Similar
Topics:
27 GMAT Diagnostic Test Question 5 26 06 Jun 2009, 20:07
15 GMAT Diagnostic Test Question 4 37 06 Jun 2009, 20:06
20 GMAT Diagnostic Test Question 3 33 06 Jun 2009, 18:33
8 GMAT Diagnostic Test Question 2 26 06 Jun 2009, 18:03
33 GMAT Diagnostic Test Question 1 30 05 Jun 2009, 21:30
Display posts from previous: Sort by

# GMAT Diagnostic Test Question 32

Moderators: WoundedTiger, Bunuel

 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®.