math

An estimate of the fish population of a certain pond was
found by catching 200 fish and marking and returning
them to the pond. The next day, 300 fish were caught, of
which 50 had been marked the previous day. Estimate
the fish population of the pond.

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  1. solve
    x/200 = 300/50, where x is the number of fish

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  2. 1200

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