SOLUTION: Carbon-14 has a half life of 5760 years. How old is a fossil that has 1/8 of the substance left?

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Question 572538: Carbon-14 has a half life of 5760 years. How old is a fossil that has 1/8 of the substance left?

Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
After one half life, 1/2 of the original amount is left. As another half life passes, the amount left is halved again. So, after 2 half lives, you have 1/4 of the original amount left. As yet another half life passes, the amount left is halved again. So, after 3 half lives, you have 1/8 of the original amount left.
So the answer is 3 times 5760 years or highlight%2817280%29 years