A firm manufactures fine, handcrafted wooden jewellery boxes. The firm uses a job costing system, and manufacturing overhead is applied on the basis of direct labour hours. Estimated manufacturing overhead for the current year is $240,000. The firm employs 10 carpenters, who are regarded as direct labour. Each of these employees is expected to work 2,000 hours during the year. At the beginning of October the inventory balances were as follows: 1. Raw material: 5,000 metres of wood at $11 per metre. 2. Work in process: job number G60, $3,700, consisting of direct material $500, direct labour, $2,000 and manufacturing overhead $1,200. 3. Finished goods: job number B50, $12,000. The following events occurred during October: a) The firm purchased 3,000 metres of wood at $11 per metre. b) The following raw materials were transferred to production: a. Job number G60: 1,000 metres of wood. b. Job number C81: 5,000 metres of wood. c) Five litres of glue were purchased in October and issued to production. The glue cost $20 per litre. Glue is treated as an indirect material. d) Depreciation on the factory equipment for October was $8,000. e) The month