Joe, Inc. purchased a machine on January 1, 2009, for $60,000; the machine had an estimated salvage value of $5,000 and an estimated use full life of 10 years. Early in 2012, it was estimated that the equipment would have a remaining useful life of 5 years (including 2012) and salvage of 3000.

If Joe. Inc. uses Sum of the Year Digits method, how much depreciation expense will be recognized for 2012?

the answer is : 10,000

can you show me how?