In a certain pond, 90 fish were caught, tagged, and returned to the pond. A few days later, 90 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?  Select the correct option:
A) 400
B) 625
C) 1250
D) 2500
E) 4091
The percent of tagged fish in the second catch is 2/90*100 = 2.22%.   We are told that 2.22% approximates the percent of tagged fish in the pond. Since there are 90 tagged fish, then we have 0.022x = 90 --&gt; x = 4,091.   Answer: 4091.
<result>E</result>
In a certain pond, 90 fish were caught, tagged, and returned to the pond. A few days later, 90 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?