In: Economics
Engineering Economy question!
Your company purchased an asset that costs $235,000, and had an expected salvage value of $25,000. The asset has a 15-year depreciation life, and it is kept for 15 years and then sold for $25,000. Use the SL, SYD methods to the book value and depreciation at the end of each year.
SL method:
Depreciation expense in each year = (Cost – Salvage value) / Life years
= (235000 – 25000) / 15
= 210000 / 15
= 14000
Ending book value = Beginning book value – Depreciation expense
Ending book value of one year would be the beginning book value of coming year.
Depreciation schedule
| 
 Year  | 
 Beginning Book value  | 
 Depreciation expense  | 
 Ending book value  | 
| 
 1  | 
 235000  | 
 14000  | 
 235000 – 14000 = 221000  | 
| 
 2  | 
 221000  | 
 14000  | 
 207000  | 
| 
 3  | 
 207000  | 
 14000  | 
 193000  | 
| 
 4  | 
 193000  | 
 14000  | 
 179000  | 
| 
 5  | 
 179000  | 
 14000  | 
 165000  | 
| 
 6  | 
 165000  | 
 14000  | 
 151000  | 
| 
 7  | 
 151000  | 
 14000  | 
 137000  | 
| 
 8  | 
 137000  | 
 14000  | 
 123000  | 
| 
 9  | 
 123000  | 
 14000  | 
 109000  | 
| 
 10  | 
 109000  | 
 14000  | 
 95000  | 
| 
 11  | 
 95000  | 
 14000  | 
 81000  | 
| 
 12  | 
 81000  | 
 14000  | 
 67000  | 
| 
 13  | 
 67000  | 
 14000  | 
 53000  | 
| 
 14  | 
 53000  | 
 14000  | 
 39000  | 
| 
 15  | 
 39000  | 
 14000  | 
 25000  | 
SYD method:
Sum of years = 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12 + 13 + 14 + 15 = 120
Depreciation base = Cost – Salvage value = 235000 – 25000 = 210000
Depreciation fraction = Remaining life years / Sum of years
Depreciation expense in each year = Depreciation base × Depreciation fraction.
Book value = Previous book value – Depreciation expense
Depreciation schedule
| 
 Year  | 
 Depreciation base  | 
 Depreciation fraction  | 
 Depreciation expense  | 
 Book value  | 
| 
 1  | 
 210000  | 
 15/120  | 
 210000 × (15/120) = 26250  | 
 210000 – 26250 = 183750  | 
| 
 2  | 
 210000  | 
 14/120  | 
 210000 × (14/120) = 24500  | 
 183750 – 24500 = 159250  | 
| 
 3  | 
 210000  | 
 13/120  | 
 210000 × (13/120) = 22750  | 
 136500  | 
| 
 4  | 
 210000  | 
 12/120  | 
 210000 × (12/120) = 21000  | 
 115500  | 
| 
 5  | 
 210000  | 
 11/120  | 
 210000 × (11/120) = 19250  | 
 96250  | 
| 
 6  | 
 210000  | 
 10/120  | 
 210000 × (10/120) = 17500  | 
 78750  | 
| 
 7  | 
 210000  | 
 9/120  | 
 210000 × (9/120) = 15750  | 
 63000  | 
| 
 8  | 
 210000  | 
 8/120  | 
 210000 × (8/120) = 14000  | 
 49000  | 
| 
 9  | 
 210000  | 
 7/120  | 
 210000 × (7/120) = 12250  | 
 36750  | 
| 
 10  | 
 210000  | 
 6/120  | 
 210000 × (6/120) = 10500  | 
 26250  | 
| 
 11  | 
 210000  | 
 5/120  | 
 210000 × (5/120) = 8750  | 
 17500  | 
| 
 12  | 
 210000  | 
 4/120  | 
 210000 × (4/120) = 7000  | 
 10500  | 
| 
 13  | 
 210000  | 
 3/120  | 
 210000 × (3/120) = 5250  | 
 5250  | 
| 
 14  | 
 210000  | 
 2/120  | 
 210000 × (2/120) = 3500  | 
 1750  | 
| 
 15  | 
 210000  | 
 1/120  | 
 210000 × (1/120) = 1750  | 
 0  |