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In a certain pond, 50 fish were caught, tagged, and returned [#permalink]
28 Nov 2003, 05:49

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Question Stats:

76% (02:18) correct
24% (00:46) wrong based on 87 sessions

In a certain pond, 50 fish were caught, tagged, and returned to the pond. A few days later, 50 fish were caught again, of which 2 were found to have been tagged. If the percent of tagged fish in the second catch approximates the percent of tagged fish in the pond, what is the approximate number of fish in the pond?

2. 2 out of the 50 fish caught were tagged thus 2/50

2/50=50/x

thus, x=1250

Think of the analogy: 2 fish is to 50 Fish as 50 fish is to ...?

You've tagged 50 fish and you need to find what that comprises as a percentage of the total fish population - we have that information with the ratio of the second catch.

Last edited by Titleist on 28 Nov 2003, 06:57, edited 1 time in total.

Re: In a certain pond, 50 fish were caught, tagged, and returned [#permalink]
28 Oct 2013, 09:53

Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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