1. A building costs P2,300,000. The estimated life is 30 years with a salvage value of P200,000.00. Using the straight line method of depreciation, calculate the: a) annual depreciation b) rate of depreciation c) book value at the end of 15th year d) book value at the end of the 25th year 2. A machine costs 50,000 and will have a salvage value of 4,000 when retired at the end of 6 years. By the sum of all year's digit method, find the depreciation charge on the 3rd year. 3. A machine costs 50,000 and will have a salvage value of 4,000 when retired at the end of 6 years. By the sum of all year's digit method, find the depreciation charge on the 5th year