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

It is currently 22 Aug 2014, 04:21

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 number of stamps Kaye and Alberto had were in the ratio

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Director
Director
User avatar
Joined: 27 Jun 2008
Posts: 549
WE 1: Investment Banking - 6yrs
Followers: 1

Kudos [?]: 45 [0], given: 92

GMAT Tests User
The number of stamps Kaye and Alberto had were in the ratio [#permalink] New post 29 Sep 2008, 05:19
1
This post was
BOOKMARKED
The number of stamps Kaye and Alberto had were in the ratio 5:3 respectively. After Kaye gave Alberto 10 of her stamps, the ratio of the number of stamps Kaye had to the number Alberto had was 7:5. As a result of this gift Kaye had how many more stamps than Alberto?

(1) 20
(2) 30
(3) 40
(4) 60
(5) 90
1 KUDOS received
Director
Director
User avatar
Joined: 12 Jul 2008
Posts: 519
Schools: Wharton
Followers: 15

Kudos [?]: 97 [1] , given: 0

GMAT Tests User
Re: GMAT Prep - Kaye / Alberto [#permalink] New post 29 Sep 2008, 06:01
1
This post received
KUDOS
pawan203 wrote:
The number of stamps Kaye and Alberto had were in the ratio 5:3 respectively. After Kaye gave Alberto 10 of her stamps, the ratio of the number of stamps Kaye had to the number Alberto had was 7:5. As a result of this gift Kaye had how many more stamps than Alberto?

(1) 20
(2) 30
(3) 40
(4) 60
(5) 90


C

K1 = 5x
A1 = 3x

K2 = 5x - 10
A2 = 3x + 10

K2/A2 = 7/5

(5x-10)/(3x+10) = 7/5
5*(5x-10) = 7*(3x+10)
25x - 50 = 21x + 70
4x = 120
x = 30

K2 = 5*30 - 10 = 140
A2 = 3*30 + 10 = 100

K2 - A2 = 40
1 KUDOS received
Intern
Intern
avatar
Joined: 06 Jul 2011
Posts: 26
Followers: 1

Kudos [?]: 4 [1] , given: 8

Re: GMAT Prep - Kaye / Alberto [#permalink] New post 09 Nov 2011, 07:53
1
This post received
KUDOS
Hi,

I was trying to set up two equations:

K/A = 5/3
(K-10) / (A+10) = 7/5

when solving, I got A = 90 and K = 150, so K-A = 60. Why is this approach wrong?
Re: GMAT Prep - Kaye / Alberto   [#permalink] 09 Nov 2011, 07:53
    Similar topics Author Replies Last post
Similar
Topics:
21 Experts publish their posts in the topic The number of stamps that Kaye and Alberto had were in the kilukilam 10 27 Jul 2010, 12:25
The number of stamps that Kaye and Alberto had were in the ucramitpatel 5 17 Nov 2006, 10:20
2 Experts publish their posts in the topic The number of stamps that Kaye and Alberto had were in ratio shehreenquayyum 3 05 Nov 2006, 15:07
The number of stamps that Kaye and Alberto had were in the dinesh8 4 07 May 2006, 17:08
The number of stamps that Kaye and Alberto had were in the rigger 8 27 Oct 2005, 12:02
Display posts from previous: Sort by

The number of stamps Kaye and Alberto had were in the ratio

  Question banks Downloads My Bookmarks Reviews Important topics  


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®.