Question 110988
Biologists collected a sample of 600 fish form Lake Marie on May 1st and tagged each of them. When they returned on June 1st, a new sample of 800 fish was collected and 10 of these had been previosuly tagged. Use this experiment to approximate fish population of Lake Linda. 
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Let Real population be "x" fish.
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Proportion:
Real pop/sample = tagged pop/tagged sample
x/600 = 800/10
x = 600*800/10 
x = 48,000 fish
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Cheers,
Stan H.