A sample of collagen exhibits 15.2 disintegrations per minute per gram (15.2d/min/g) of carbon. The C^14 decay rate for the sample of glue was found to be 5.60d/min/g. What is the approximate age of the glue. Disintegration of C^14 is a first order process with a rate constant 1.209*10^-4 year^-1.