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fish pond ps

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Director
Joined: 17 Oct 2005
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Kudos [?]: 62 [0], given: 0

fish pond ps [#permalink]  14 Jan 2006, 04:41
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In a certain pond, scientists caught a number of 80 goldfish and labeled them, then let tem off. At the second time, they caught 80 goldfish at random, and found that five of them were labeled. IF the goldfish state in the pond is constant, what is the total number of goldfish?
Director
Joined: 09 Oct 2005
Posts: 722
Followers: 3

Kudos [?]: 12 [0], given: 0

May be some typo?
Not enough info for me!
Matt,duttsit, TeHCM?Guys any guesses?
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IE IMBA 2010

Manager
Joined: 30 Jan 2005
Posts: 143
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Kudos [?]: 1 [0], given: 0

typo error.. few lines are missin I guess...
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Director
Joined: 17 Oct 2005
Posts: 940
Followers: 1

Kudos [?]: 62 [0], given: 0

i also believe there could be a typo somewhere.

oa is 1280

5/80=80/x

does this make sense?
Manager
Joined: 30 Jan 2005
Posts: 143
Followers: 1

Kudos [?]: 1 [0], given: 0

it means ...

the % of labelled fish in the second catch = % of labelled in the first catch

I beleive this line was missing .....!

so 5/80 = 80/x

x = total no of fish in the pound
which is = 1280
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"Nothing is Impossible"

Director
Joined: 04 Oct 2005
Posts: 587
Location: Chicago
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Kudos [?]: 5 [0], given: 0

oh man, i almost tried for 10min thinking tht i can solve it..
Director
Joined: 09 Oct 2005
Posts: 722
Followers: 3

Kudos [?]: 12 [0], given: 0

andy_gr8 wrote:
oh man, i almost tried for 10min thinking tht i can solve it..

I tried for a 30 secs!But still thought that I am Dumb)))
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fish pond ps

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