The Bailand Company purchased a building for P 210,000 that had an estimated residual value of P10,000 and an estimated service life of 10 years. The company purchased the building four years ago and has used straight-line depreciation. At the beginning of the fifth year (before it records depreciation for the year), the following independent situations
occur:

1. The company estimates that the asset has eight years’ life remaining (for a total of 12 years).
2. The company changes to the sum-of-the-years’-digits method.
3. The company discovers that the estimated residual value has been ignored in the computation of the depreciation.
Required:
For each of the independent situations, prepare all the journal entries relating to the building for the fifth year. Ignore income taxes