Pqs reported equipment tk. 50,000 and tk. 35,000 respectively as on december 31, 2020, and december 31, 2019. the corresponding accumulated depreciation was tk. 12,000 and tk. 8,000. during 2020, pqs sold a piece of equipment for tk. 5,000 (associated accumulated depreciation was tk. 3,000) resulting in a loss of tk. 2,000. determine the following amounts for 2020. (a) depreciation expense. (b) equipment purchase.