an asset for drilling was purchased and placed in service by a petroleum production company. its cost basis is $55000 and it has an estimated MV of $13,000 at the end of an estimated useful life of 11 years. compute the depreciation amount in the third year and the third year and the BV at the end of the 7th year of life by each of these methods:

a. The SL method

b. The 200% DB method with a switchover to SL

c. The GDS

d. The ADS

GDS Recovery Rates (rk) for the Six Personal Property Classes
	Recovery Period (and Property Class)
Year	3-yeara	5-yeara	7-yeara	10-yeara	15-yearb	20-yearb
1	0.3333	0.2000	0.1429	0.1000	0.0500	0.0375
2	0.4445	0.3200	0.2449	0.1800	0.0950	0.0722
3	0.1481	0.1920	0.1749	0.1440	0.0855	0.0668
4	0.0741	0.1152	0.1249	0.1152	0.0770	0.0618
5		0.1152	0.0893	0.0922	0.0693	0.0571
6		0.0576	0.0892	0.0737	0.0623	0.0528
7			0.0893	0.0655	0.0590	0.0489
8			0.0446	0.0655	0.0590	0.0452
9				0.0656	0.0591	0.0447
10				0.0655	0.0590	0.0447
11				0.0328	0.0591	0.0446
12					0.0590	0.0446
13					0.0591	0.0446
14					0.0590	0.0446
15					0.0591	0.0446
16					0.0295	0.0446
17						0.0446
18						0.0446
19						0.0446
20						0.0446
21						0.0223