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How old in years is a fossil sample that has 12.5 percent C-14?
Wiki User
∙ 14y ago
The half-life of Carbon-14 is 5,730 years. As such for the carbon-14 to decay from 100% to 12.5% it would take three times the half-life of the material.
100% (1st half life decay period) 50% (2nd half life decay period) 25% (3rd half life decay period) 12.5%.
Therefore = 5730 x 3 = 17,190 years.
Wiki User
∙ 14y ago
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