XYZ Company is contemplating the purchase of a large stamping machine which will cost P180,000.With additional transportation and installation costs of P5,000 and 10,000.Its market value at the end of 5 years is estimated at P40,000.

1. What is the depreciation expense of the stamping machine on the 3rd year using declining balance?
2. What is the accumulated depreciation of the stamping machine at the end of year 3 using sum-of-year's digit?
3. What is the book value of the stamping machine at the end of year 3 using sinking fund with an interest of 10%?
4. What is the book value of the stamping machine at the end of year 3 using straight line depreciation?