Radioactive decay is a first-order reaction. Carbon-14 is used in determining the age of a fossil or archaeological sample. The half-life for the decay of 14C is 5730 years. A certain ancient wood found in an excavation site was analyzed for its 14C content and compare it with living trees. It was found out that the sample contains only 72% of the 14C remaining on its bark. What is the age of the wood