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

 It is currently 18 Oct 2019, 04:11

### 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

# What is the average (arithmetic mean) of 2x + 3, 5x − 4, 6x − 6, and 3

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 58458
What is the average (arithmetic mean) of 2x + 3, 5x − 4, 6x − 6, and 3  [#permalink]

### Show Tags

21 Oct 2018, 21:53
00:00

Difficulty:

5% (low)

Question Stats:

94% (00:44) correct 6% (00:38) wrong based on 44 sessions

### HideShow timer Statistics

What is the average (arithmetic mean) of 2x + 3, 5x − 4, 6x − 6, and 3x − 1?

A. 2x + 4

B. 3x − 2

C. 3x + 2

D. 4x − 2

E. 4x + 2

_________________
VP
Status: Learning stage
Joined: 01 Oct 2017
Posts: 1013
WE: Supply Chain Management (Energy and Utilities)
What is the average (arithmetic mean) of 2x + 3, 5x − 4, 6x − 6, and 3  [#permalink]

### Show Tags

21 Oct 2018, 21:58
Bunuel wrote:
What is the average (arithmetic mean) of 2x + 3, 5x − 4, 6x − 6, and 3x − 1?

A. 2x + 4

B. 3x − 2

C. 3x + 2

D. 4x − 2

E. 4x + 2

Add 'x' terms and $$x^0$$ terms , and divide by number of numbers( here 4),

Average or AM=$$\frac{2x+5x+6x+3x+3-4-6-1}{4}=\frac{16x-8}{4}=4x-2$$

Ans. (D)
_________________
Regards,

PKN

Rise above the storm, you will find the sunshine
Intern
Joined: 08 Jan 2017
Posts: 21
Location: India
GMAT 1: 630 Q45 V31
GMAT 2: 670 Q48 V34
GPA: 4
WE: Engineering (Computer Software)
Re: What is the average (arithmetic mean) of 2x + 3, 5x − 4, 6x − 6, and 3  [#permalink]

### Show Tags

22 Oct 2018, 06:54
Average/Mean = (Sum of all the terms)/ (No of the terms)

Here,
Sum of all the terms= (2x + 3) + (5x − 4) + (6x − 6) + (3x − 1)
= 16x - 8
No of the terms = 4

Average = (16x - 8)/ 4
= 4x - 2(D)
Target Test Prep Representative
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 8099
Location: United States (CA)
Re: What is the average (arithmetic mean) of 2x + 3, 5x − 4, 6x − 6, and 3  [#permalink]

### Show Tags

23 Oct 2018, 19:26
Bunuel wrote:
What is the average (arithmetic mean) of 2x + 3, 5x − 4, 6x − 6, and 3x − 1?

A. 2x + 4

B. 3x − 2

C. 3x + 2

D. 4x − 2

E. 4x + 2

(2x + 3 + 5x − 4 + 6x − 6 + 3x − 1)/4 = (16x - 8)/4 = 4x - 2

_________________

# Scott Woodbury-Stewart

Founder and CEO

Scott@TargetTestPrep.com
122 Reviews

5-star rated online GMAT quant
self study course

See why Target Test Prep is the top rated GMAT quant course on GMAT Club. Read Our Reviews

If you find one of my posts helpful, please take a moment to click on the "Kudos" button.

Re: What is the average (arithmetic mean) of 2x + 3, 5x − 4, 6x − 6, and 3   [#permalink] 23 Oct 2018, 19:26
Display posts from previous: Sort by