Lingfield Ltd purchases a machine for P20,000 on 1 July 2010. The machine is estimated to have a useful economic life of four years, after which it can be soldfor P4,000. The company depreciates the machine using the straight-line method, charging a full year's depreciation in both the year of purchase and sale. Lingfield Ltd prepares its financial statements to 30 June each year. Calculate the carrying amount of the machine at 30 June 2013?