Welcome to Beat The GMAT, the world's largest GMAT & MBA forum. Please join our rich community of friendly members. Get free help from
experts who teach at the leading GMAT & MBA prep companies — Kaplan, Veritas Prep, Manhattan GMAT and Stacy Blackman Consulting.

Announcement: Apply for the Beat The GMAT/Veritas Prep MBA Fast Track Scholarship, featuring $20,000 in prizes.

tough DS.


 
Post new topic   Reply to topic    Beat The GMAT Forum Index -> GMAT Math -> Data Sufficiency
View previous topic :: View next topic  
Author Message
tridip
Guest
PostPosted: Wed Oct 03, 2007 2:31 pm    Post subject: tough DS. Reply with quote
During an experiment,some water was removed from each of 6 water tanks.If the standard deviation of the volumn of the water in the tank at the brgining of the experiment was 10 gallons,what what was the standard deviation of the volumns of water in the tank at the end of the experiment??

1-- For each tank,30% of the volumn of water that was in the tank at the brgining of the experiment was removed during the experiment.

2:- The average (AM) volumn of water in the tank at the end of the experiment was 63 gallons.

Hello guys,,plsss try this math..Its harder I guess.
Back to top


samirpandeyit62
GMAT Destroyer!


Joined: 25 Mar 2007
Posts: 460

Thanks given: 1
Thanked 23 times in 23 posts
PostPosted: Sun Oct 07, 2007 1:48 am    Post subject: Reply with quote
http://www.beatthegmat.com/viewtopic.php?t=5810
_________________
Regards
Samir
Back to top


View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    Beat The GMAT Forum Index -> GMAT Math -> Data Sufficiency All times are GMT - 7 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum



"GMAT" and other GMAC™ trademarks are registered trademarks of the Graduate Management Admission Council™. The Graduate Management Admission Council™ does not endorse, nor is it affiliated in any way with the owner or any content on this website. The opinions expressed here are solely those of the author or those of the members of this website. Copyright © 2008 BTG Test Prep, LLC. Powered by phpBB © 2001, 2005 phpBB Group.