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

It is currently 16 Sep 2014, 15:36

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

GMAT PREP (PS)

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Director
Director
User avatar
Joined: 03 Sep 2006
Posts: 893
Followers: 6

Kudos [?]: 127 [0], given: 33

GMAT PREP (PS) [#permalink] New post 06 May 2010, 11:34
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

25% (02:45) correct 75% (00:33) wrong based on 7 sessions
Please explain...
Attachments

PS4.PNG
PS4.PNG [ 20.63 KiB | Viewed 1827 times ]

Expert Post
3 KUDOS received
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 29655
Followers: 3490

Kudos [?]: 26227 [3] , given: 2707

Re: GMAT PREP (PS) [#permalink] New post 06 May 2010, 12:05
3
This post received
KUDOS
Expert's post
LM wrote:
In the figures above, if the area of the triangle on the right is twice the area of the triangle on the left, then in terms of s, S=


Property of similar triangles: In two similar triangles, the ratio of their areas is the square of the ratio of their sides.

Hence \frac{AREA}{area}=\frac{S^2}{s^2}=2 --> S=s\sqrt{2}.

Answer: C.
_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

COLLECTION OF QUESTIONS:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS ; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
25 extra-hard Quant Tests

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Director
Director
User avatar
Joined: 03 Sep 2006
Posts: 893
Followers: 6

Kudos [?]: 127 [0], given: 33

Re: GMAT PREP (PS) [#permalink] New post 06 May 2010, 12:34
Bunuel wrote:
LM wrote:
Please explain...


Property of similar triangles: In two similar triangles, the ratio of their areas is the square of the ratio of their sides.

Hence \frac{AREA}{area}=\frac{S^2}{s^2}=2 --> S=s\sqrt{2}.

Answer: C.


Thanks I did not know this! the ratio of their areas is the square of the ratio of their sides.
Manager
Manager
avatar
Status: Last few days....Have pressed the throttle
Joined: 20 Jun 2010
Posts: 73
WE 1: 6 years - Consulting
Followers: 3

Kudos [?]: 23 [0], given: 27

Re: GMAT PREP (PS) [#permalink] New post 25 Aug 2010, 01:24
Bunuel that was awesome...although read all concepts in your Polygon blog..but did not click to me. +1 to you as always
_________________

Consider giving Kudos if my post helps in some way

Manager
Manager
avatar
Joined: 19 Apr 2010
Posts: 216
Schools: ISB, HEC, Said
Followers: 4

Kudos [?]: 18 [0], given: 28

GMAT Tests User
Re: GMAT PREP (PS) [#permalink] New post 08 Sep 2010, 05:39
This is certainly not a 700 Level question Bunuel can be moved
Intern
Intern
avatar
Joined: 06 Sep 2010
Posts: 17
Schools: HBS
WE 1: Management Consulting- 2 years
WE 2: Private Equity- 2 years
Followers: 1

Kudos [?]: 26 [0], given: 6

GMAT Tests User
Tough Geometry PS- Help Please! [#permalink] New post 06 Oct 2010, 05:29
I eliminated A and B for this because I knew that S had to be greater than s, but I did not know how to find the exact answer. I also eliminated 2s because that excludes the height when calculating area, but again I could not figure out how to get the exact answer. Any help please?? Thanks!!! The file is attached.

Jeremiah
Attachments

Geo PS1.docx [57.39 KiB]
Downloaded 39 times

To download please login or register as a user

Expert Post
1 KUDOS received
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 29655
Followers: 3490

Kudos [?]: 26227 [1] , given: 2707

Re: Tough Geometry PS- Help Please! [#permalink] New post 06 Oct 2010, 05:39
1
This post received
KUDOS
Expert's post
Intern
Intern
avatar
Joined: 08 Oct 2009
Posts: 12
Followers: 0

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

Re: GMAT PREP (PS) [#permalink] New post 23 Oct 2010, 09:08
If you don't know the property:
take H=height of the larger triangle
and h=height of the smaller triangle

As the area is twice ,so HS=2hs
because triangles are similar h/s=H/S or h/H=s/S

Now after solving we get S=(2^1/2)s
Answer: C.
Re: GMAT PREP (PS)   [#permalink] 23 Oct 2010, 09:08
    Similar topics Author Replies Last post
Similar
Topics:
PS/RATIO/GMAT PREP jamesrwright3 1 06 Aug 2006, 00:41
PS- GMAT Prep brcinsf 8 21 Jun 2006, 21:36
PS- GMAT Prep brcinsf 7 21 Jun 2006, 21:34
GMAT Prep PS - Geometry hdakshina 5 11 Jun 2006, 18:09
PS-GMAT prep girl17 9 23 Feb 2006, 15:25
Display posts from previous: Sort by

GMAT PREP (PS)

  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®.