If the 1/2 life of C-14 is 5,730 years, then a fossil that has 1/8 size of C-14 to C-12 is how many years old?

Question

please show your steps

Answer 1

with 1/8 or 12.5 % number of years is 17200 plus/minus 10 years

see C-14 calculator:

http://dwb.unl.edu/Teacher/NSF/C03/C03Li...

and check it for 1/2 or 50%

Answer 2

Two half Lives=1/4

Three half-lives=1/8

5730(3)=17,190