Carbon dating is a process used for determining the age of any living thing. For example, and archeologist can using carbon dating to determine the age of a bone. The process relies on the fact that any living object is made up of the more abundant carbon (C-12) and a radioisotope of carbon, C-14. C-14 has a half life of 5730 years. Suppose a bone sample originally had 300 grams of C-14, however scientists found only 40 grams. Approximately how old is this bone (in years)?