1. Prepare a 10-column worksheet. 3. Prepare the post-closing trial balance. the closing entries. Required: . Prepare Additional pieces of information determined for December 31, 2017 are as follows: a. Depreciation of delivery equipment is P9,000 and that of Furniture and Fixture is P11,250. b. Office supplies used during the year amounted to P7,500. c. Insurance expired during the year is P1,500. d. Ending inventory amounted to P150,000. e. Doubtful accounts at year-end are estimated to be P4,500. f. Unpaid commissions at year-end amounted to P18,000. Required: 1. Prepare a 10-column worksheet. 2. Prepare the closing entries. 3. Prepare the post-closing trial balance