The purchasing engineer of XYZ Company bought a new industrial cooker at a cost of Php 1,750,000. It is expected to be used for 15 years and its salvage value is Php 150,000. Calculate the depreciation cost at year 10, the book value at year 10, and the total depreciation after 10 years using:

1. Straight-line method

2. Sinking fund formula

3. Declining balance method

4. Double declining balance method