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

 It is currently 04 Jul 2015, 22:07

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

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

GMATPrep#1: At a certain pet shop, 1/3 of pets... (DS)

Author Message
TAGS:
Intern
Joined: 28 Aug 2007
Posts: 13
Followers: 0

Kudos [?]: 3 [0], given: 0

GMATPrep#1: At a certain pet shop, 1/3 of pets... (DS) [#permalink]  01 Oct 2007, 15:13
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 100% (00:00) wrong based on 2 sessions
Here's a DS question that I couldn't quite get my hands around. I know this is relatively simple, but my brain can't seem to come up with the right equations for this one!

At a certain pet shop, 1/3 of the pets are dogs and 1/5 of the pets are birds. How many of the pets are dogs?

(1) There are 30 birds at the pet shop
(2) There are 20 more dogs than birds at the pet shop.

My rephrasing of the question:
1/3 (B+D) = D
1/5 (B+D) = B

What is B+D?

My rephrasing of the statements:
(1) B=30
(2) D = B + 20

Suggestions?
VP
Joined: 09 Jul 2007
Posts: 1108
Location: London
Followers: 6

Kudos [?]: 76 [0], given: 0

Re: GMATPrep#1: At a certain pet shop, 1/3 of pets... (DS) [#permalink]  01 Oct 2007, 15:18
D.

All pets=X
so Dogs=x/3 and birds=x/5

1. x/5=30, so all the pets are x=150. then u can find dogs. thus suff.

2. x/3=x/5+20 find x=150 then u can find dogs. thus suff.

so D
Intern
Joined: 28 Aug 2007
Posts: 13
Followers: 0

Kudos [?]: 3 [0], given: 0

Ah, it finally clicked. So simple - thanks!
Similar topics Replies Last post
Similar
Topics:
1 Last Friday each of the pets at a certain veterinary clinic 6 06 Nov 2013, 01:21
13 At a certain pet shop, 1/3 of the pets are dogs and 1/5 of 11 17 Jul 2010, 09:29
2 At a certain pet shop, 1/3 of the pets are dogs and 1/5 of 2 22 Mar 2010, 06:35
10 At a certain pet shop, 1/3 of the pets are dogs and 1/5 of t 8 06 Jan 2008, 05:58
At a certain pet shop, 1/3 of pets are dogs and 1/5 of pets 3 22 May 2006, 06:14
Display posts from previous: Sort by

GMATPrep#1: At a certain pet shop, 1/3 of pets... (DS)

 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®.