PS - GMATPrep - Population : PS Archive
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 23 Jan 2017, 23:15

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# PS - GMATPrep - Population

Author Message
Manager
Joined: 28 Dec 2006
Posts: 61
Followers: 1

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

PS - GMATPrep - Population [#permalink]

### Show Tags

28 Apr 2007, 17:07
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

### HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Could anyone please explain how to solve this ?
Attachments

GMATPrep7_AnsD.JPG [ 37.98 KiB | Viewed 570 times ]

GMAT Club Legend
Joined: 10 Apr 2007
Posts: 4318
Location: Back in Chicago, IL
Schools: Kellogg Alum: Class of 2010
Followers: 88

Kudos [?]: 750 [0], given: 5

### Show Tags

28 Apr 2007, 19:44
The easy and right way: Since you have 11 districts if the smallest one has to be within 10% of the largest. The lowest number will have all 10 other districts with the same size.

(132,000 - X) / 10 = 1.1X

132,000 - X = 11X

132,000 = 12X

X = 11,000

Remember if you can't do the right math, it is multiple guess so at least narrow it down.

Pick the middle one as the first test since you can narrow it down from there.
132,000 - 10,900 = 121,100
121,100 / 10 = 12100
10900 x 1.1 = 11990

Since that was to small go to the next one up. 11,000
132,000 - 11,000 = 121,000
121,000 / 10 = 12000
11000 x 1.1 = 12000

Since 12,000=12,000 the answer is D, 11,000
28 Apr 2007, 19:44
Display posts from previous: Sort by