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Given that carbon-14 decays at a cons...

Given that carbon-14 decays at a constant rate in such a way that it reduces to 50% in 5568 years, find the age of an old wooden piece in which the carbon is only 12.5% of the original. `15836\ y e a r s` b. `16668\ y e a r s` c. `16704\ y e a r s` d. `17552\ y e a r s`

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