GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 17 Oct 2019, 03:30

### 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

# 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

Math Expert
Joined: 02 Sep 2009
Posts: 58431
Is the average (arithmetic mean) of a and b greater than 30?  [#permalink]

### Show Tags

10 Oct 2019, 02:16
00:00

Difficulty:

35% (medium)

Question Stats:

82% (01:26) correct 18% (01:05) wrong based on 22 sessions

### HideShow timer Statistics

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

(1) b – a = 35
(2) a is greater than 20.

_________________
Senior Manager
Joined: 25 Jul 2018
Posts: 264
Re: Is the average (arithmetic mean) of a and b greater than 30?  [#permalink]

### Show Tags

10 Oct 2019, 02:53
Is (a+b)> 60?

Statement1: b—a=35
—> If b=40 and a=5, then 40+5>60 (No)

—> if b=70 and a=35, then 70+35> 60 (Yes)
Insufficient

Statement2: a > 20
No info about what b is.

Insufficient

Taken together 1&2,
b—a=35
a> 20
—> a=b—35
b—35>20
b> 55

a> 20 and b>55 —> a+b is always greater than 60.

Sufficient

The answer is C

Posted from my mobile device
Re: Is the average (arithmetic mean) of a and b greater than 30?   [#permalink] 10 Oct 2019, 02:53
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

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