It is currently 02 Jul 2020, 08:31
My Tests

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.

If the average (arithmetic mean) of 5 numbers j, j + 5, 2j –

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
1 KUDOS received
Founder
Founder
User avatar
Joined: 18 Apr 2015
Posts: 11900
Followers: 250

Kudos [?]: 2961 [1] , given: 11149

CAT Tests
If the average (arithmetic mean) of 5 numbers j, j + 5, 2j – [#permalink] New post 24 Apr 2020, 05:50
1
This post received
KUDOS
Expert's post
00:00

Question Stats:

100% (00:19) correct 0% (00:00) wrong based on 3 sessions
If the average (arithmetic mean) of 5 numbers j, j + 5, 2j – 1, 4j – 2, and 5j – 1 is 8, what is the value of j ?

A. \(\frac{1}{3}\)

B. \(\frac{7}{13}\)

C. 1

D. 3

E. 8
[Reveal] Spoiler: OA

_________________

Need Practice? 20 Free GRE Quant Tests available for free with 20 Kudos
GRE Prep Club Members of the Month: Each member of the month will get three months free access of GRE Prep Club tests.

GRE Instructor
User avatar
Joined: 10 Apr 2015
Posts: 3504
Followers: 132

Kudos [?]: 3935 [0], given: 63

CAT Tests
Re: If the average (arithmetic mean) of 5 numbers j, j + 5, 2j – [#permalink] New post 24 Apr 2020, 07:35
Expert's post
Carcass wrote:
If the average (arithmetic mean) of 5 numbers j, j + 5, 2j – 1, 4j – 2, and 5j – 1 is 8, what is the value of j ?

A. \(\frac{1}{3}\)

B. \(\frac{7}{13}\)

C. 1

D. 3

E. 8


GIVEN: he average (arithmetic mean) of 5 numbers \(j\), \(j + 5\), \(2j – 1\), \(4j – 2\), and \(5j – 1\) is \(8\)

We can write: \(\frac{j + (j+5) + (2j-1) + (4j-2)+ (5j-1)}{5}=8\)

Multiply both sides of the equation by \(5\) to get: \(j + (j+5) + (2j-1) + (4j-2)+ (5j-1) = 40\)

Simplify to get: \(13j + 1 = 40\)

Subtract \(1\) from both sides to get: \(13j = 39\)

Divide both sides by \(13\) to get: \(j = \frac{39}{13}=3\)

Answer: D

RELATED VIDEO FROM MY COURSE

_________________

Brent Hanneson – Creator of greenlighttestprep.com
Sign up for my free GRE Question of the Day emails
Image

Re: If the average (arithmetic mean) of 5 numbers j, j + 5, 2j –   [#permalink] 24 Apr 2020, 07:35
Display posts from previous: Sort by

If the average (arithmetic mean) of 5 numbers j, j + 5, 2j –

  Question banks Downloads My Bookmarks Reviews Important topics  


GRE Prep Club Forum Home| About| Terms and Conditions and Privacy Policy| GRE Prep Club Rules| Contact

Powered by phpBB © phpBB Group

Kindly note that the GRE® test is a registered trademark of the Educational Testing Service®, and this site has neither been reviewed nor endorsed by ETS®.