What is the product? 5/8x3/4=? a: 8/32 b: 15/32 c: 8/12 d: 15/12 plz explain and show work

Situation: find the age of the skull to the nearest year, enter the correct answer. a hiker in africa discovers a skull that contains 32% of its original amount of c- 14. done n = noekt 00000 no = inital amount of c-14 (at time t = 0) n = amount of c-14 at time t k = 0.0001 t = time, in years