NEW HERE? LEARN MORE
closeclose
Last visit was: 04 May 2024, 03:35 It is currently 04 May 2024, 03:35
Decision Tracker
My Rewards
New posts
New comers' posts

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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel

Geometry problem

olive
Joined: 31 Dec 1969
Own Kudos [?]: [0]
Given Kudos:
Concentration: Entrepreneurship, International Business
WE:Supply Chain Management (Energy and Utilities)
Geometry problem [#permalink] New post   18 May 2008, 15:18
Can't for the life of me figure this one out.. please explain!
Attachment:
gmatprep 2 geometry problem.JPG




Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Quantitative Questions Forum
Still interested in this question? Check out the "Best Topics" block below for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
User avatar
ldpedroso
Manager
Manager
Joined: 01 May 2008
Posts: 59
Own Kudos [?]: 58 [0]
Given Kudos: 0
Location: São Paulo
Send PM
Re: Geometry problem [#permalink] New post   18 May 2008, 15:54
I think it shoulb be C.
Do you have the OE?
olive
Joined: 31 Dec 1969
Own Kudos [?]: [0]
Given Kudos:
Concentration: Entrepreneurship, International Business
WE:Supply Chain Management (Energy and Utilities)
Re: Geometry problem [#permalink] New post   18 May 2008, 16:11
The answer is definitely D - I rechecked to make sure ;-)
User avatar
LiveStronger
Manager
Manager
Joined: 21 Apr 2008
Posts: 114
Own Kudos [?]: 294 [0]
Given Kudos: 0
Location: Motortown
Send PM
Re: Geometry problem [#permalink] New post   18 May 2008, 16:16
Answer is D

Here is the explanation :

Since AB = OC, which is the radius of the circle --> AB = BO, so we have 2 iscoceless traingles, ABO and BOC.
Lets say angles BAO is y, ACO is x.
From option 1: since angle COD is 60, x+y = 180-120= 60
And 2y+180-x = 180for triangle ABO
2y = x
3y = 60
y =20

From option 2 :
x = 40 degrees

From triangle ABO, 2y +180-x = 180
2y = x
so, y = 20

So the answer is D.
User avatar
LiveStronger
Manager
Manager
Joined: 21 Apr 2008
Posts: 114
Own Kudos [?]: 294 [0]
Given Kudos: 0
Location: Motortown
Send PM
Re: Geometry problem [#permalink] New post   18 May 2008, 16:28
If you helped me post my first answer to a question, so Thank You :-D



Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Quantitative Questions Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
GMAT Club Bot
gmatclubot
Re: Geometry problem [#permalink]
18 May 2008, 16:28
Moderator:
yashikaaggarwal
Senior Moderator - Masters Forum
3137 posts

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne
Main navigation
GMAT Resources
Partners
MBA Resources
www.gmac.com|www.mba.com | | GMAT Club Rules | Terms and Conditions