Joyce depreciates her non-current assets using the straight-line method of depreciation, but she writes off any office equipment costing under $200 in the year of purchase. On 1 January 2016 she bought a printer, cost $120, which she expected to use for 3 years. The book value of her office equipment on 31 December 2016 was $24610. What would be the book value of her office equipment on 31 December 2016 if Joyce wrote off only office equipment costing under $100?