Question

The half-life of carbon-14 is 5,730 years. How many grams of parent material will remain from a 200-gram sample after 3 half-lives?
100

50

25

12.5

Answer 1

one half life gives \(\frac{1}{2}\) of the original amount
two half lives gives \(\frac{1}{4}\) of the original amount
three half lives gives \(\frac{1}{8}\) of the original amount

Answer 2

whats the answer though?
100

50

25

12.5