Luke's Lubricants starts business on January 1. The following operations data are available for January for the one lubricant it produces. Gellons Beginning inventory Started in January 159,000 Ending work-in-process inventory (80% complete) 15,000 Costs incurred in January follow Materials. $ 160,000 Labor Manufacturing overhead 31,000 74,000 All production at Luke's is sold as it is produced (there are no finished goods inventories) Required: a. Compute cost of goods sold for January. (Do not round intermediate calculations.) b. What is the value of work-in-process inventory on January 31? (Do not round intermediate calculations.) a Cost of goods sold for January b. Work in process inventory on January 31