Booker Corporation purchased equipment on May 31 of Year 4 for $288,000. The expected useful life is 8 years, and residual value is $20,000. They round depreciation to the nearest month, and the straight-line depreciation amount is rounded to the nearest dollar. On June 30 of Year 8, they determine that the total expected useful life of the equipment will be 10 years instead of 8 years. Residual value will be revised to $11,000. Fiscal Year-End for Booker Corporation is December 31. Required Determine depreciation expense for the Year 8. Marks for this question are allocated based on your clearly labelled calculations. (15 marks for calculations; 5 marks for the correct answer)