A telephone company purchased microwave radio equipment for P6,000,000. Freight and installation charges amounted to 3% of the purchased price. If the equipment shall be depreciated over a period of 8 years with a salvage value of 7%, determine the following: Determine the depreciation charge during the 5th year and the book value at the end of 5 years by the (a) declining balance method (b) double declining balance method (c) sinking fund method at 12%