Carbon12 (C12) is stable and is the most abundant isotope of carbon. An ancient scrap of paper has 0.4 times the Carbon14 that a new piece of paper has. How many years old is the scrap of paper? (half-life of C14 is 5730 years). 

Round the answer to no decimal places. 

 

Answer:

Approximately time of decay is 7575 years.

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