The value of machine depreciates every four year at the rate of 10% on its value at the begining of that year if the present value of the machine is Tk.729 its worth 3 years ago was.

প্রশ্নঃ The value of machine depreciates every four year at the rate of 10% on its value at the begining of that year if the present value of the machine is Tk.729 its worth 3 years ago was.