An asset costs $150,000 and has a salvage value of $15,000 after 10 years. What is the depreciation charge for the 4th year, and what is the book value at the end of the 8th year with
(a) MACRS depreciation?
(b) straight-line depreciation?
(c) sum-of-the-year' digits (SOYD) depreciation?
(d) double declining balance depreciation?