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# Biologists working to estimate the population of foxes in

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Senior Manager
Joined: 23 Aug 2003
Posts: 461
Location: In the middle of nowhere
Biologists working to estimate the population of foxes in [#permalink]

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17 Feb 2004, 14:53
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Biologists working to estimate the population of foxes in small town captured and tagged 30 foxes on one night. The foxes were then released. The next night they captured 30 foxes and found that 6 of them had already been tagged. The best estimate for the fox population of the town would be

A 30
B 36
C 60
D 150
E 180

( Dont have the official answer for this)

Vivek.
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"Start By Doing What Is Necessary ,Then What Is Possible & Suddenly You Will Realise That You Are Doing The Impossible"

Director
Joined: 03 Jul 2003
Posts: 652

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17 Feb 2004, 16:05
I would go with D

30/X = 6/30

X = 150
Senior Manager
Joined: 30 Aug 2003
Posts: 322
Location: dallas , tx

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17 Feb 2004, 17:49
What does X indicates???
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shubhangi

GMAT Club Legend
Joined: 15 Dec 2003
Posts: 4288

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17 Feb 2004, 17:53
shubhangi wrote:
What does X indicates???

X = total population of foxes in the small town
I agree with 150
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Paul

Intern
Joined: 25 Jan 2004
Posts: 28
Location: Redwood City, USA

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17 Feb 2004, 21:40
I go with D as well.

6 from 30 is 20% and 30 = 20% of x, which x = 150

or

6/30 = 30/x which X equals 150.
17 Feb 2004, 21:40
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# Biologists working to estimate the population of foxes in

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