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

It is currently 23 Jul 2014, 10:46

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

what is x

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Director
Director
avatar
Joined: 10 Feb 2006
Posts: 664
Followers: 1

Kudos [?]: 32 [0], given: 0

GMAT Tests User
what is x [#permalink] New post 25 Nov 2007, 18:39
Please provide details. Thanks

Attachments

what is x.doc [76 KiB]
Downloaded 28 times

To download please login or register as a user


_________________

GMAT the final frontie!!!.

Expert Post
CEO
CEO
User avatar
Joined: 17 Nov 2007
Posts: 3604
Concentration: Entrepreneurship, Other
Schools: Chicago (Booth) - Class of 2011
GMAT 1: 750 Q50 V40
Followers: 349

Kudos [?]: 1683 [0], given: 354

GMAT ToolKit User GMAT Tests User Premium Member
 [#permalink] New post 25 Nov 2007, 22:38
Expert's post
C

1. or 2. it is obviously that 1 and 2 along are insufficient. For 1 statement we can move U along PT to change angle x

1&2. QRS and UTS are isosceles triangles

angle(QSR)= (180-angle(QRS))/2
angle(UST)= (180-angle(UTS))/2

x+angle(QSR)+angle(UST)=180 ==>
x=180- (180-angle(QRS))/2-(180-angle(UTS))/2=(angle(QRS)+angle(UTS))/2

but for right triangle: angle(QRS)+angle(UTS)=90

Therefore, x=90/2=45 sufficient
CEO
CEO
User avatar
Joined: 29 Mar 2007
Posts: 2593
Followers: 16

Kudos [?]: 179 [0], given: 0

GMAT Tests User
Re: what is x [#permalink] New post 25 Nov 2007, 23:23
alimad wrote:
Please provide details. Thanks


Wow thanks for posting this. After working on this for about 6minutes, i finally solved this problem. I had this on a previous GPrep and guessed C. I wasnt actually able to solve for X though this time around.

Please see drawing.

Ok we have angle X.

S1: for the smaller triangle we have z and y and y. z+2y=180* from here we cannot figure anything else out. Insuff.

S2: we have angle n, and 2 w's. Same as s1, though cannot figure anything else out.

Together we have x+y+w=180*

we also have 2y+z=180*
n+2w=180*.


No look at big triangle we have angles z, 90*, and n. so z+n+90*=180*

z+n=90*.

heres the trick to solve this: add

2y+z=180*
2w+n=180*

we have 2y+2w+z+n=360*---> plug in for z+n--> 2y+2w+90*=360*

y+w=135* No plug into x+y+w --> x= 45*


Answer is C.

Attachments

Doc1.doc [390 KiB]
Downloaded 28 times

To download please login or register as a user

Re: what is x   [#permalink] 25 Nov 2007, 23:23
    Similar topics Author Replies Last post
Similar
Topics:
12 Experts publish their posts in the topic What is x? rohitgoel15 15 31 Jan 2012, 17:48
1 Experts publish their posts in the topic What is x? lionslion 3 12 Mar 2010, 13:17
3 Experts publish their posts in the topic What is x? Economist 10 14 Oct 2009, 19:47
What is X TheRob 2 17 Sep 2009, 09:35
What is X. alimad 5 19 Nov 2007, 15:32
Display posts from previous: Sort by

what is x

  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®.