Cost Flow Relationships The following information is available for the first month of operations of Lane Inc., a manufacturer of mechanical pencils: Sales $261,740 Gross profit 152,590 Indirect labor 56,800 Indirect materials 28,400 Other factory overhead 8,640 Materials purchased 80,620 Total manufacturing costs for the period 150,500 Materials inventory, end of period 10,730 Using the above information, determine the following: a. Cost of goods sold: b. Direct materials cost: c. Direct labor cost