The initial cost of a paint Sand Mill, including its installation is P800,000. The BIR approved the life of the machine is 10 years for depreciation. The estimated salvage of the Mill is P50,000 and the cost of dismantling is estimated to be P15,000. Using straight line Method , what is the book value of the machine at the end of six years. Using sinking fund method at i= 10%, compare the book value at the end of 6 years. Use both methods to compare the two.