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

 It is currently 04 May 2015, 03:04

### 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

# A new cell phone plan is offering pricing based on average

Author Message
TAGS:
Director
Joined: 01 May 2007
Posts: 794
Followers: 1

Kudos [?]: 121 [0], given: 0

A new cell phone plan is offering pricing based on average [#permalink]  26 Dec 2007, 08:33
00:00

Difficulty:

(N/A)

Question Stats:

100% (02:24) correct 0% (00:00) wrong based on 5 sessions
A new cell phone plan is offering pricing based on average monthly use. Brandon and Jodie are comparing their average use to determine the best plan for them. Brandon's average monthly usage in 2001 was q minutes. Was this less than, greater than, or equal to Jodie's 2001 average monthly usage, in minutes?
(1) From January to August 2001, Jodie's average monthly usage was 1.5q minutes.

(2) From April to December 2001, Jodie's average monthly usage was 1.5q minutes.
Senior Manager
Joined: 22 Sep 2005
Posts: 279
Followers: 1

Kudos [?]: 89 [0], given: 1

I think it is C.

1) INSUF. The Average is 1.5 q for 8 months, that is a total of 12 q for the 8 months. Nevertheless, we do not know anytthing aaboy the balance months. So INS.

2) The same. INS.

But taken together, we have all the information to solve the problem.

Regards.
SVP
Joined: 28 Dec 2005
Posts: 1583
Followers: 2

Kudos [?]: 88 [0], given: 2

is statement 2 supposed to say from august to december, instead of april to december ?

in any case, with statement 1, we are trying to basically find whether :

(12q+x)/12 > q ... where x is the usage for the remaining 4 months. We can simplify this to ask is x>0 ?

I initially thought A was enough to solve, but then I forgot to consider that for the remaining 4 months, the usage could be 0 minutes.
Manager
Joined: 12 May 2009
Posts: 54
Followers: 2

Kudos [?]: 58 [0], given: 18

Re: DS: Averages [#permalink]  24 Oct 2009, 11:48
Hi there,

I would also say the correct answer should be C. However, the official MGMAT answer is B (I got this questions from the weekly question bank). Any idea why this is?

Best
Manager
Joined: 12 May 2009
Posts: 54
Followers: 2

Kudos [?]: 58 [0], given: 18

Re: DS: Averages [#permalink]  06 Nov 2009, 17:34

Ben's monthly average = q
Therefore, the sum equals 12q

Now, if we can proof that Jodie's usage per year was higher than Ben's, we answered the question.

(1) Insufficient since only eight month (1.5q * 8 = 12q - for the whole year it could be higher than 12)
(2) Sufficient since we are looking at a 9 month period (1.5q * 9 > 12q)
Re: DS: Averages   [#permalink] 06 Nov 2009, 17:34
Similar topics Replies Last post
Similar
Topics:
1 A new cell phone plan is offering pricing based on average monthly use 2 08 Oct 2014, 13:27
Cell phone plan 3 18 Nov 2011, 13:03
2 Cell phone update thread 33 21 Mar 2009, 13:12
1 Cell phones and plans 30 30 Nov 2008, 09:58
Average price of new house 9 07 Sep 2008, 06:48
Display posts from previous: Sort by