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

It is currently 22 Jul 2014, 06:14

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

IF 75% of guest at a certain banquet ordered dessert,what

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Joined: 13 Aug 2009
Posts: 153
WE 1: 4 years in IT
Followers: 1

Kudos [?]: 24 [0], given: 7

IF 75% of guest at a certain banquet ordered dessert,what [#permalink] New post 20 Aug 2010, 09:30
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

67% (03:08) correct 33% (00:41) wrong based on 15 sessions
IF 75% of guest at a certain banquet ordered dessert,what percent of guest ordered coffee?

1)60%of the guest who ordered dessert also ordered coffee.

2)90%of the guest who ordered coffee also ordered dessert.

I can able to understand 1 'st stmt but cant able to figure the 2 stmt..Solution in numbers will really help me out.

[Reveal] Spoiler:
OA-C
[Reveal] Spoiler: OA
Intern
Intern
User avatar
Joined: 15 Aug 2010
Posts: 23
Location: Mumbai
Schools: Class of 2008, IIM Ahmedabad
Followers: 4

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

Re: IF 75% of guest [#permalink] New post 20 Aug 2010, 11:55
Hi,

Let total guests be 1000.

# of people who ordered dessert = 750

Statement 1:

# of people who ordered coffee amongst dessert guys - 60% of 750 = 450

# of people who ordered coffee amongst the non - dessert guys - Do not know.

Hence, insufficient.

Statement 2:

90% of coffee drinkers ordered dessert. But, the 750 dessert guys could include people who did not order coffee in the first place. We have no way of knowing this split.

Hence, insufficient.

Statement 1 and 2:

If x is the # of coffee drinkers,

60% of 750 = 90% of x - We really do not want to evaluate x - As long as we realize that x can be calculable, we can conclude that both statements together are sufficient.

Hope this helps. Thanks.
_________________

Naveenan Ramachandran
4GMAT - Mumbai

Manager
Manager
avatar
Joined: 06 Apr 2010
Posts: 58
Followers: 0

Kudos [?]: 22 [0], given: 13

Re: IF 75% of guest [#permalink] New post 20 Aug 2010, 20:20
I setup up a table, with column A coffee drinks, column B no coffee; row 1 dessert, row 2 no dessert

:::::::::::::: Coffee//No Coffee//Total
Dessert...........?...........?.............75
No Dessert......?...........?............. 25
Total..............?..........?..............100

For statement 1, if we assume there are 100 people at the banquet:
We take 60% of 75:


:::::::::::::: Coffee//No Coffee//Total
Dessert...........45...........30.............75
No Dessert......?...........?............. 25
Total..............?..........?..............100


For statement 2: You can pick any almost multiple of 10 for total coffee drinkers, and the chart would still

:::::::::::::: Coffee//No Coffee//Total
Dessert.........27/9.........?............75
No Dessert......3/1........ ?............ 25
Total............30/10.......?............100



However, if you have both info, and you know what that top left corner is, you can figure out what the bottom left no dessert is. Hope this helps, please give kudos for my really graphic intensive tables
_________________

If you liked my post, please consider thanking me with Kudos! I really appreciate it! :)

Intern
Intern
User avatar
Joined: 15 Dec 2009
Posts: 23
Schools: Any offering one year MBA
WE 1: Information Tech
WE 2: Event Consultant for FIFA addi events and WC
Followers: 0

Kudos [?]: 5 [0], given: 14

Re: IF 75% of guest [#permalink] New post 02 Sep 2010, 23:30
raghavs wrote:
IF 75% of guest at a certain banquet ordered dessert,what percent of guest ordered coffee?

1)60%of the guest who ordered dessert also ordered coffee.

2)90%of the guest who ordered coffee also ordered dessert.

I can able to understand 1 'st stmt but cant able to figure the 2 stmt..Solution in numbers will really help me out.

[Reveal] Spoiler:
OA-C


What about the % of people who order neither coffee nor dessert? Is it right to assume that guests ordered only coffee and desert unless mentioned? IMO E as we don't know the % of guests who ordered neither.
_________________

K 4 KUDOS

Re: IF 75% of guest   [#permalink] 02 Sep 2010, 23:30
    Similar topics Author Replies Last post
Similar
Topics:
1 Experts publish their posts in the topic If 75 percent of the guests at a certain banquet ordered des Bunuel 6 28 Feb 2014, 02:55
1 Experts publish their posts in the topic The Guests at a football banquet consumed a total of 401 Archit143 3 26 Sep 2012, 10:36
10 Experts publish their posts in the topic If 75 percent of the guests at a certain banquet ordered des abhi47 9 31 Jan 2012, 08:52
1 Experts publish their posts in the topic The Guests at a football banquet consumed a total of 401 GMATD11 5 18 Mar 2011, 07:05
11 Experts publish their posts in the topic If 75% of guest at a certain banquet ordered dessert, what Baten80 16 23 Feb 2011, 03:43
Display posts from previous: Sort by

IF 75% of guest at a certain banquet ordered dessert,what

  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®.