Mathematics, 14.04.2021 22:50, tfracciscoramon

Researchers safely captured 16 river dolphins and placed a painless tag under their flipper. These river dolphins were quickly returned to the water. Two weeks later, the researchers captured 21 dolphins and found that 3 of them had already been tagged. Estimate the number of river dolphins in the Amazon River. You have to set the problem up with a proportion and variable.

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Researchers safely captured 16 river dolphins and placed a painless tag under their flipper. These r...