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# Paper test #14, section #5, question #12

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Paper test #14, section #5, question #12 [#permalink]

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15 Nov 2005, 22:39
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

How to solve this problem?

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?

(A) 400
(B) 625
(C) 1,250
(D) 2,500
(E) 10,000
VP
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Re: Paper test #14, section #5, question #12 [#permalink]

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15 Nov 2005, 22:46
maxrum wrote:
How to solve this problem?

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?

(A) 400
(B) 625
(C) 1,250
(D) 2,500
(E) 10,000

We know that 50 fish are tagged. Let x be the approx number of fish in the pond.

(2/50)=(50/x), solve for x.

Answer is C
Intern
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15 Nov 2005, 23:29
Thaks! It was easy
15 Nov 2005, 23:29
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# Paper test #14, section #5, question #12

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