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

 It is currently 07 Jul 2015, 18:21

### 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

# Events & Promotions

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

# The first flight out of Pheonix on Sunday was late

 Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:
Manager
Joined: 02 Aug 2007
Posts: 232
Schools: Life
Followers: 3

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

The first flight out of Pheonix on Sunday was late [#permalink]  03 Feb 2009, 19:41
The first flight out of Pheonix on Sunday was late. If the following three flights departed on time, how many further flights need to depart on time in order for the airport's on time departure rate to be higher than 90%?

* 6
* 7
* 9
* 10
* 11
SVP
Joined: 29 Aug 2007
Posts: 2493
Followers: 59

Kudos [?]: 579 [0], given: 19

Re: The first flight out of Pheonix on Sunday was late [#permalink]  03 Feb 2009, 20:01
x-ALI-x wrote:
The first flight out of Pheonix on Sunday was late. If the following three flights departed on time, how many further flights need to depart on time in order for the airport's on time departure rate to be higher than 90%?

* 6
* 7
* 9
* 10
* 11

The question is ambigious as ther could be more than 11 flights of which some could be late.

B. However, it should be 7 subject to no more flight is late..
_________________
SVP
Joined: 07 Nov 2007
Posts: 1824
Location: New York
Followers: 29

Kudos [?]: 565 [0], given: 5

Re: The first flight out of Pheonix on Sunday was late [#permalink]  03 Feb 2009, 20:12
x-ALI-x wrote:
The first flight out of Pheonix on Sunday was late. If the following three flights departed on time, how many further flights need to depart on time in order for the airport's on time departure rate to be higher than 90%?

* 6
* 7
* 9
* 10
* 11

Agree that question is poorly worded. You need to add word "least" number of flights
At least how many further flights need to depart on time in order for the airport's on time departure rate to be higher than 90%?

What is the source.

agree with B .

1(late)+ 3(ontime)+ x(further ontime)

suc% = total onitme flights/total flights departed
when total flights 10 suc% = 9/10 = 90%
when total flights 11 suc% = 10/11 > 90%

so X= 7
_________________

Your attitude determines your altitude
Smiling wins more friends than frowning

Manager
Joined: 02 Aug 2007
Posts: 232
Schools: Life
Followers: 3

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

Re: The first flight out of Pheonix on Sunday was late [#permalink]  04 Feb 2009, 16:23
OA is B. Source is GMAT Club Tests
Re: The first flight out of Pheonix on Sunday was late   [#permalink] 04 Feb 2009, 16:23
Similar topics Replies Last post
Similar
Topics:
On any given saturday, flights arrive at XYZ airport every 2 29 Jun 2008, 09:00
1 Last Sunday a certain store sold copies of Newspaper A for 9 11 Mar 2008, 09:15
The first flight out of Pheonix on Sunday was late. If the 1 08 Mar 2008, 02:42
Last Sunday a certain store sold copies of Newspaper A for 10 23 Aug 2006, 06:06
Last Sunday a certain store sold copies of Newspaper A for 5 05 Aug 2006, 07:23
Display posts from previous: Sort by

# The first flight out of Pheonix on Sunday was late

 Question banks Downloads My Bookmarks Reviews Important topics

 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®.