In a certain pond, 35 fish were caught, tagged, and returned to the pond. A few days later, 35 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`s the approximate number of fish in the pond? Answers.
A) 400
B) 625
C) 875
D) 2500
E) 10 000
If x is total number of fish in the pond :   4 = 35/x * 100   =&gt; x = 875   So answer is 875
<result>C</result>
In a certain pond, 35 fish were caught, tagged, and returned to the pond. A few days later, 35 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`s the approximate number of fish in the pond?