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

 It is currently 05 May 2015, 13:26

### 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

# In the pizza palace, 95% of the customers order pizza. if

Author Message
TAGS:
Manager
Joined: 27 Jul 2003
Posts: 124
Location: Singapore
Followers: 1

Kudos [?]: 10 [0], given: 0

In the pizza palace, 95% of the customers order pizza. if [#permalink]  09 Oct 2003, 20:57
In the pizza palace, 95% of the customers order pizza. if 65% of the customers who order pizza also eat breadsticks, find the probability that a customer who ordrs a pizza willl order breadsticks.
SVP
Joined: 03 Feb 2003
Posts: 1608
Followers: 6

Kudos [?]: 76 [0], given: 0

I vote for 0.95*0.65=0.6175
Intern
Joined: 29 Aug 2003
Posts: 49
Location: Detroit, MI
Followers: 0

Kudos [?]: 2 [0], given: 0

Me too. 0.6175

65% of 95% = 61.75%
Manager
Joined: 27 Jul 2003
Posts: 124
Location: Singapore
Followers: 1

Kudos [?]: 10 [0], given: 0

praet was right, ans 13/19 (about 68%)
Manager
Joined: 11 Mar 2003
Posts: 54
Location: Chicago
Followers: 1

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

IMHO, there must be a mistake in the problem statement. Because for the answer 13/19 to be true, the problem statement should be like this:

In the pizza palace, 95% of the customers order pizza. If the 65% of the customer order both pizza and breadsticks( instead of if 65% of the customers who order pizza also eat breadsticks), find the probability that a customer who ordrs a pizza willl order breadsticks.

Please see the attachement for the explanation.

Friends, please let me know if my explanation sounds reasonable to you.

p.s. If we consider the problem statement as it is, stolyar's and amarsesh's response would indicate "probability of ANY CUSTOMER ordering breadsticks".
Attachments

probability22.doc [27.5 KiB]

GMAT Instructor
Joined: 07 Jul 2003
Posts: 770
Location: New York NY 10024
Schools: Haas, MFE; Anderson, MBA; USC, MSEE
Followers: 13

Kudos [?]: 52 [0], given: 0

am1974 wrote:
IMHO, there must be a mistake in the problem statement. Because for the answer 13/19 to be true, the problem statement should be like this:

In the pizza palace, 95% of the customers order pizza. If the 65% of the customer order both pizza and breadsticks( instead of if 65% of the customers who order pizza also eat breadsticks), find the probability that a customer who ordrs a pizza willl order breadsticks.

Please see the attachement for the explanation.

Friends, please let me know if my explanation sounds reasonable to you.

p.s. If we consider the problem statement as it is, stolyar's and amarsesh's response would indicate "probability of ANY CUSTOMER ordering breadsticks".

I think you are correct. If 65% of the customers who order pizza order breakstick, then the probability that a customer who orders a pizza will order breadsticks is simply 65%.
_________________

Best,

AkamaiBrah
Former Senior Instructor, Manhattan GMAT and VeritasPrep
Vice President, Midtown NYC Investment Bank, Structured Finance IT
MFE, Haas School of Business, UC Berkeley, Class of 2005
MBA, Anderson School of Management, UCLA, Class of 1993

Similar topics Replies Last post
Similar
Topics:
3 Given that a “12-inch pizza” means circular pizza with a diameter of 1 4 02 Mar 2015, 07:23
4 Marty's Pizza Shop guarantees that their pizzas all have a 10 27 Feb 2013, 03:14
4 At a certain pizza parlor, the diameter of a large pizza is 6 10 Oct 2012, 10:04
At a Pizza Parlor, in addition to cheese there are 10 5 23 Jun 2007, 05:05
DS - Pizza 6 13 Dec 2006, 10:06
Display posts from previous: Sort by