Answer
Approximately 23,000 years old.
Work Step by Step
This amount represents four half lives ($1/2^{4}$=$\frac{1}{16}$). The half-life for 14C is 5730 years, and 4 times this is about 23,000 years.
Campbell Biology (12th Edition)
by Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky
Published by
Pearson
ISBN 10:
0135188741
ISBN 13:
978-0-13518-874-3
Chapter 25 - 25.2 - Concept Check - Page 532: 2
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