Problema Solution
Wildlife biologists catch, tag, and then release 200 deer back into a wildlife refuge. Two weeks later they observe a sample of 50 deer, 20 of which are tagged. Assuming the ratio of tagged deer in the sample holds for all deer in the refuge,approximately how many deer are in the refuge?
Answer provided by our tutors
let
d = total number of animals in the refuge
Original number of tagged animals / Total number of animals in the refuge = Number of recaptured tagged animals / Number of animals in the second sample
200/d = 20/50
by solving the equation we find
d = 500 deers are in the refuge
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