At the beginning of 2012, the company purchased a machine that had a cost of $160,000, an estimated useful life of 5 years, and an estimated salvage value of $10,000. The company used the sum-of-years-digits (SYD) method to depreciate the machine. In 2014, the company decided to switch to the straight-line method of depreciation and changed the estimated salvage value of the machine to $7,000. Assume that the accumulated depreciation of the machine at the beginning of 2014 is $90,000 using SYD and would be $60,000 using the straight-line method. Depreciation expense for 2014 has not yet been recorded.

5. What is the amount of depreciation expense that should be recorded for the machine for 2014? a. $23,333 b. $30,600 c. $31,000 d. $21,000. The answer is D but how do I get to it?