SOLUTION: Hi, I'm trying to study a study guide that my teacher gave me but I just don't understand how he got the answer. The problem is A fossilized leaf contains 28% of its normal amoun

Question 324566: Hi, I'm trying to study a study guide that my teacher gave me but I just don't understand how he got the answer. The problem is
A fossilized leaf contains 28% of its normal amount of carbon 14. How old is the fossil (to the nearest year)? Use 5600 years as the half-life of carbon 14.
What is the formula?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!

To find k, use the half life information.

Work the problem in the same way.
Instead of (1/2) of the original carbon, you have 28% or 0.28 times the original amount.
Find t.

10284 years old.
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