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Biologists working to estimate the population of foxes in

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Senior Manager
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Biologists working to estimate the population of foxes in [#permalink]  17 Feb 2004, 13:53
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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I would go with D

30/X = 6/30

X = 150
Senior Manager
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What does X indicates???
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shubhangi

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shubhangi wrote:
What does X indicates???

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

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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.
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