An income property is purchased for $100,000 with $80,000 al…

An income property is purchased for $100,000 with $80,000 allocated to the building and $20,000 to the land. The depreciation rate is 10% per year, straight line. The property is sold for $100,000 net at the end of the tenth year. How much did the seller declare as a capital gain in the year of the sale?