XYZ CORP OFFICE purchased a new machine for making electronic components. It is known that the new machine has a fair market value of $550,000 and a useful life of six years, and no salvage value. To purchase the new machine the company paid $475,000 in cash and traded in old equipment with a book value of $15,000. Calculate the Cost Basis. Assume GDS method is used, compute the deprecation amount through the end of year 6. The 200% DB method, what is the cumulative depreciation amount at the end of year 4?