It is currently 23 Jan 2018, 13:57

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.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Is the average (arithmetic mean) of a and b greater than 30?

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Expert Post
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 43380
Is the average (arithmetic mean) of a and b greater than 30? [#permalink]

Show Tags

New post 28 Dec 2017, 20:39
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

81% (00:23) correct 19% (00:35) wrong based on 16 sessions

HideShow timer Statistics

Expert Post
1 KUDOS received
examPAL Representative
User avatar
B
Joined: 07 Dec 2017
Posts: 122
Re: Is the average (arithmetic mean) of a and b greater than 30? [#permalink]

Show Tags

New post 29 Dec 2017, 03:50
1
This post received
KUDOS
Expert's post
Bunuel wrote:
Is the average (arithmetic mean) of a and b greater than 30?

(1) a is a positive number.
(2) b is greater than 60.


To find the average of two numbers we need to know their sum.
We'll see whether the statements give us this information - a Logical approach.

(1) does not give us the sum of a and b.
Insufficient.

(2) does not give us the sum of a and b (as a could be negative).
Insufficient.

Combined: Now we know that the sum of a and b must be greater than 61 so their average must be greater than 30.
Enough information!
(C) is our answer.
_________________

David
Senior tutor at examPAL
Signup for a free GMAT course
Image
Image

Re: Is the average (arithmetic mean) of a and b greater than 30?   [#permalink] 29 Dec 2017, 03:50
Display posts from previous: Sort by

Is the average (arithmetic mean) of a and b greater than 30?

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

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®.