It is currently 19 Nov 2019, 08:12
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.

a, b, c, and d are consecutive integers such that a < b < c

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Retired Moderator
User avatar
Joined: 07 Jun 2014
Posts: 4808
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 145

Kudos [?]: 2282 [0], given: 393

a, b, c, and d are consecutive integers such that a < b < c [#permalink] New post 30 Aug 2018, 16:27
Expert's post
00:00

Question Stats:

74% (00:32) correct 25% (00:43) wrong based on 35 sessions
a, b, c, and d are consecutive integers such that \(a < b < c < d\).

Quantity A
Quantity B
The average (arithmetic mean) of a, b, c, and d
The average (arithmetic mean)of b and c


A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
[Reveal] Spoiler: OA

_________________

Sandy
If you found this post useful, please let me know by pressing the Kudos Button

Try our free Online GRE Test

1 KUDOS received
Active Member
Active Member
Joined: 29 May 2018
Posts: 126
Followers: 0

Kudos [?]: 98 [1] , given: 4

Re: a, b, c, and d are consecutive integers such that a < b < c [#permalink] New post 01 Sep 2018, 10:10
1
This post received
KUDOS
sandy wrote:
a, b, c, and d are consecutive integers such that \(a < b < c < d\).

Quantity A
Quantity B
The average (arithmetic mean) of a, b, c, and d
The average (arithmetic mean)of b and c


A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.


Let the series be 4<3<2<1 as consecutive integers.

avg of four number = 10/4 = 2.5

b+c avg = b+c/2 = 5/2 = 2.5.

both same . C.
1 KUDOS received
GRE Instructor
User avatar
Joined: 10 Apr 2015
Posts: 2569
Followers: 91

Kudos [?]: 2736 [1] , given: 40

CAT Tests
Re: a, b, c, and d are consecutive integers such that a < b < c [#permalink] New post 20 Aug 2019, 10:33
1
This post received
KUDOS
Expert's post
sandy wrote:
a, b, c, and d are consecutive integers such that \(a < b < c < d\).

Quantity A
Quantity B
The average (arithmetic mean) of a, b, c, and d
The average (arithmetic mean)of b and c


A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.


Here's an algebraic approach:

If a, b, c, and d are consecutive integers such that \(a < b < c < d\), then we can conclude the following:
\(a = a\) (no duh :-D )
\(b = a + 1\)
\(c = a + 2\)
\(d = a + 3\)

We can now replace b, c and d with their equivalent values to get:

Quantity A: Average \(= \frac{a+(a+1)+(a+2)+(a+3)}{4}= \frac{4a+6}{4}=\frac{4a}{4}+\frac{6}{4}=a+1.5\)

Quantity B: Average \(=\frac{(a+1)+(a+2)}{2}=\frac{2a+3}{2}=\frac{2a}{2}+\frac{3}{2}=a+1.5\)

Answer: C

Cheers,
Brent

RELATED VIDEO FROM MY COURSE

_________________

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

Re: a, b, c, and d are consecutive integers such that a < b < c   [#permalink] 20 Aug 2019, 10:33
Display posts from previous: Sort by

a, b, c, and d are consecutive integers such that a < b < c

  Question banks Downloads My Bookmarks Reviews Important topics  


cron

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®.