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

It is currently 30 Jul 2015, 21:58
GMAT Club Tests

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

Can anyone suggest the right approach .

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Director
Director
User avatar
Joined: 09 Aug 2006
Posts: 525
Followers: 2

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

Can anyone suggest the right approach . [#permalink] New post 06 Nov 2006, 07:02
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Can anyone suggest the right approach ..
Attachments

c.JPG
c.JPG [ 43.55 KiB | Viewed 425 times ]

Manager
Manager
avatar
Joined: 01 Nov 2006
Posts: 70
Followers: 1

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

 [#permalink] New post 06 Nov 2006, 07:27
The right approach is to assume both are true and then start labeling everything.

If RS = RQ, then Triangle RQS is isoceles so angle RQS = angle RSQ. Call this angle t. Now Angle SRQ = 180 - 2t.

Similarly, If TS = TU, then Triangle STU is isoceles so angle TUS = angle TSU. Call this angle p. Now Angle STU = 180 - 2p.

Now looking at the big triangle

180 = angle P + angle R + angle T

= 90 + (180 - 2t) + (180 - 2p)

which means 270 = 2*(p+t) or (p+t) = 135

Looking back at the original question Angle QSU + p + t = 180
so Angle QSU = 180 - (p+t) = 180 - 135 = 45

That neither individually is sufficient should be clear just by moving around angles p and t in your head.
VP
VP
avatar
Joined: 15 Jul 2004
Posts: 1473
Schools: Wharton (R2 - submitted); HBS (R2 - submitted); IIMA (admitted for 1 year PGPX)
Followers: 17

Kudos [?]: 120 [0], given: 13

 [#permalink] New post 07 Nov 2006, 02:51
180-2a + 180 - 2b = 90 (assuming a and b are the angles in the two isoceles triangs)

so a+b = 135
and a + b + x = 180 So X can be determined.

Need both.
Senior Manager
Senior Manager
avatar
Joined: 23 May 2005
Posts: 266
Location: Sing/ HK
Followers: 1

Kudos [?]: 21 [0], given: 0

 [#permalink] New post 07 Nov 2006, 08:45
Missing out on a geometry concept for sure...

dwivedys, 2 questions:

(1) why can you equate angle R and angle T to 90?
(2) why can you equate a+b+x to 180?
_________________

Impossible is nothing

  [#permalink] 07 Nov 2006, 08:45
Display posts from previous: Sort by

Can anyone suggest the right approach .

  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®.