A researcher tagged 40 giant turtles in 2008. In 2009, he returned and captured 50 turtles, 16 of which were tagged. In 2010, she returned again and
captured 30 turtles, 8 of which were tagged.
A.) Use a proportion to estimate the turtle population of 2009
B.) Use a proportion to estimate the turtle population for 2010

Question

A researcher tagged 40 giant turtles in 2008. In 2009, he returned and captured 50 turtles, 16 of which were tagged. In 2010, she returned again and 
captured 30 turtles, 8 of which were tagged.
A.) Use a proportion to estimate the turtle population of 2009
B.) Use a proportion to estimate the turtle population for 2010

kirbykirby · Answer

$$ Total = \frac{\text{original number tagged} \times \text{total recaptured}}{\text{number tagged on recapture}}$$

kropot72 · Answer

A) The tagged turtles are 16/50 of the sample. Therefore an estimate of the 2009 population is:
$$40\times\frac{50}{16}=you\ can\ calculate$$

anonymous · Answer

125.?

kropot72 · Answer

Correct. Can you calculate B) with the same method?

anonymous · Answer

sweet thank you :)

kropot72 · Answer

You're welcome :)