Find all School-related info fast with the new School-Specific MBA Forum

It is currently 23 Oct 2014, 04:04

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

The relationship between quantities m and n is expressed by the equati

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Status: GMAT Preperation
Joined: 04 Feb 2010
Posts: 105
Concentration: Social Entrepreneurship, Social Entrepreneurship
GPA: 3
WE: Consulting (Insurance)
Followers: 2

Kudos [?]: 24 [0], given: 15

The relationship between quantities m and n is expressed by the equati [#permalink] New post 16 Sep 2010, 02:49
1
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

83% (02:24) correct 17% (01:39) wrong based on 44 sessions
The relationship between quantities m and n is expressed by the equation 11m = 5(n - 42). If the difference between the two chosen values of n is 30, what is the difference in the corresponding values of m?

A. 30/11
B. 42/11
C. 60/11
D. 150/11
E. 14

Source: Manhattan Review
[Reveal] Spoiler: OA

Last edited by Bunuel on 24 Sep 2014, 23:22, edited 1 time in total.
Renamed the topic, edited the question and added the OA.
2 KUDOS received
Retired Moderator
User avatar
Joined: 02 Sep 2010
Posts: 807
Location: London
Followers: 76

Kudos [?]: 506 [2] , given: 25

GMAT ToolKit User Reviews Badge
Re: The relationship between quantities m and n is expressed by the equati [#permalink] New post 16 Sep 2010, 02:55
2
This post received
KUDOS
say the sets of values are m1,n1 and m2,n2

11m1 = 5(n1-42)
11m2 = 5(n2-42)

Subtracting

11(m1-m2)=5(n1-n2)

So m1-m2 = (5*30)/11

OR if you are familiar with differential calculus, you can get from the equation straight away by differentiating that :

11 dm = 5 dn
and hence m = 150/11
_________________

Math write-ups
1) Algebra-101 2) Sequences 3) Set combinatorics 4) 3-D geometry

My GMAT story

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Manager
Manager
avatar
Status: Keep fighting!
Affiliations: IIT Madras
Joined: 31 Jul 2010
Posts: 238
WE 1: 2+ years - Programming
WE 2: 3+ years - Product developement,
WE 3: 2+ years - Program management
Followers: 4

Kudos [?]: 182 [0], given: 104

Re: The relationship between quantities m and n is expressed by the equati [#permalink] New post 16 Sep 2010, 04:46
Yup. thats the simplest way.
Manager
Manager
avatar
Joined: 04 Aug 2010
Posts: 158
Followers: 2

Kudos [?]: 24 [0], given: 15

Re: The relationship between quantities m and n is expressed by the equati [#permalink] New post 16 Sep 2010, 09:44
shrouded1 wrote:
say the sets of values are m1,n1 and m2,n2
11m1 = 5(n1-42)
11m2 = 5(n2-42)
Subtracting
11(m1-m2)=5(n1-n2)
So m1-m2 = (5*30)/11


smart
i would never have thought of using differential eq'ns either. kudos.
1 KUDOS received
Manager
Manager
avatar
Joined: 17 Apr 2010
Posts: 109
Followers: 2

Kudos [?]: 51 [1] , given: 12

GMAT ToolKit User
Re: The relationship between quantities m and n is expressed by the equati [#permalink] New post 16 Sep 2010, 13:31
1
This post received
KUDOS
Another Simple way

11m=5(n-42)

Assume n = 42 to make one side equal to 0
then 11m=0
and m = 0

Repeat it by assuming n as 42+30 i.e 72
11m- 5(72-42)
11m=150
m=150/11

diff = 150/11 - 0 = 150/11
CEO
CEO
User avatar
Joined: 09 Sep 2013
Posts: 2831
Followers: 206

Kudos [?]: 42 [0], given: 0

Premium Member
Re: The relationship between quantities m and n is expressed by the equati [#permalink] New post 24 Sep 2014, 18:39
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________

GMAT Books | GMAT Club Tests | Best Prices on GMAT Courses | GMAT Mobile App | Math Resources | Verbal Resources

VP
VP
User avatar
Status: The Best Or Nothing
Joined: 27 Dec 2012
Posts: 1086
Location: India
Concentration: General Management, Technology
WE: Information Technology (Computer Software)
Followers: 6

Kudos [?]: 304 [0], given: 170

Re: The relationship between quantities m and n is expressed by the equati [#permalink] New post 02 Oct 2014, 00:48
tiruraju wrote:
Another Simple way

11m=5(n-42)

Assume n = 42 to make one side equal to 0
then 11m=0
and m = 0

Repeat it by assuming n as 42+30 i.e 72
11m- 5(72-42)
11m=150
m=150/11
diff = 150/11 - 0 = 150/11



Did in the same way

Placing value of n = 42 makes the resultant zero

So, no need of subtraction after placing n = 72; results are direct :)
_________________

Kindly press "+1 Kudos" to appreciate :)

Re: The relationship between quantities m and n is expressed by the equati   [#permalink] 02 Oct 2014, 00:48
    Similar topics Author Replies Last post
Similar
Topics:
6 Experts publish their posts in the topic quantity expressions devinawilliam83 5 27 Feb 2012, 20:38
In a recent study examining the relationship between noboru 26 02 Aug 2009, 10:38
By reviewing new findings on the relationship between trainspotting 2 24 Jul 2009, 07:10
1 The relationship between corpulence and disease remain automan 9 24 Oct 2005, 11:04
In a study of the relationship between aggression and chunjuwu 9 16 Mar 2005, 03:58
Display posts from previous: Sort by

The relationship between quantities m and n is expressed by the equati

  Question banks Downloads My Bookmarks Reviews Important topics  


cron

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

Powered by phpBB © phpBB Group and phpBB SEO

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®.