Question

a fur coat has C-14 activity 1/16 that of living tissue. How old is fur coat?

Answer 1

1/2 = 1 half life

1/4 = 2 half lives
1/8 = 3 half lives
1/16 = 4 half lives.
So the fur coat is 4 half lives old.
What's the half life of C-14. I think about 5,700 years but you can look that up.
So the fur coat is half life x 4 = ?