Question

The radioactive element​ carbon-14 has a​ half-life of 5750 years. a scientist determined that the bones from a mastodon had lost 72.6​% of their​ carbon-14. how old were the bones at the time they were​ discovered?

Answer 1

• 8349 years* I am not sure *
• as the Half-Life is 5750 this means that 50% of the bone will be lost after 5750 years
• so 72.6% will be lost after 8349 years by using cross multiplication