6. A non-current asset cost 50,000 and has an estimated residual value of 2,000 after 12 years. Using the straight-line method, the NBV after 4 years is: (a) 16,000 (b) 42,000 (c) 34,000 (d) 33,330 7. A non-current asset cost 40,000 and is depreciated by 25% per annum using the reducing balance method. After 2 years the NBV is: (a) 10,000 (b) 12,500 (c) 20,000 (d) 22,500