4. On January 1, 2016, Canberra Company acquired an equipment for P2,160,000. The equipment is expected to have a five year life. Straight-line depreciation is used. On January 1, 2018, the asset is appraised as having a sound value (depreciated replacement cost) of P1,944,000. On January 1, 2020 the asset is appraised at a sound value of P324,000. Instruction: Determine the following: 1. 2018 appraised value 2. 2018 revaluation surplus 3. 2020 appraised value 4. 2020 revaluation surplus