enigneering economy

Problem 16.023: Calculate the difference between the book value and the trade-in value A video-recording system was purchased 4 years ago at a cost of $43,000. A 5 -year recovery period and DDB (Double Declining Balance) depreciation have been used to write off the basis. The system is to be replaced this year with a trade-in value of $4,500. What is the difference between the book value and the trade-in value? The difference between the book value and the trade-in value is $