What is the total number of deer in the population?

Question

When studying wildlife populations, biologists sometimes use a technique called "mark-recapture." For example, a researcher captured and tagged 48 deer in a wildlife management area. Several months later, the researcher observed a new sample of 70 deer and determined that 8 were tagged. What is the total number of deer in the population?

Answer 1

70/8 = D/48

70 = D/6

D= 70(6)= 420 estimated deer population