If a fossil was found that had 50% radioactive carbon-14 and 50% decayed element, approximately how old is the fossil?

A fossil is found that contains 6.25% radioactive Carbon-14 and 93.75% decayed element.  Approximately how old is the fossil? a5730 yrs b11460 yrs c17190 yrs d22920 yrs e28650 yrs

Carbon-14 is a radioactive nucleus with a half-life of 5760 years. In livingmatter the amount of carbon-14 decays at a rate of 15.3 decay events perminute per gram of carbon. A fossil is analysed and found to have a carbon-14 decay rate of 7.70 decay events per minute per gram of carbon. How oldis the fossil?

A fossil is found that contains 3 g of radioactive Carbon-14 and 45 g of decayed element.  Approximately how many years old is the fossil?  (the half-life of Carbon-14 is 5730 years) a5730 b11460 c17190 d22920 e28650

The carbon-14 in the fossil had five half-lives. The fossil was between 18,000 and 21,000 years old.The amount of carbon-14 in the fossil decreased over time.The fossil was older than other fossils found in the same area

In the process of radiometric dating, if the percent of the original amount of carbon-14 present in a fossil is 12.5%, how old is the fossil? The half-life of carbon-14 is 5,730 years.Multiple choice question.11,460 years old17,190 years old5,700 years old22,920 years old