On April 30, the end of the first month of operations, Joplin Company prepared the following income statement, based on the absorption costing concept: Joplin Company Absorption Costing Income Statement For the Month Ended April 30 Sales (2,600 units) $96,200 Cost of goods sold: Cost of goods manufactured (3,000 units) $78,000 Inventory, April 30 (400 units) (10,400) Total cost of goods sold (67,600) Gross profit $28,600 Selling and administrative expenses (16,440) Operating income $12,160 If the fixed manufacturing costs were $17,940 and the fixed selling and administrative expenses were $8,050, prepare an income statement according to the variable costing concept. Round all final answers to whole dollars.If the fixed manufacturing costs were $17,940 and the fixed selling and administrative expenses were $8,050, prepare an income statement according to the variable costing concept. Round all final answers to whole dollars. Joplin Company Variable Costing Income Statement For the Month Ended April 30 Sales Variable cost of goods sold: Variable cost of goods manufact Inventory, April 30 - v Total variable cost of goods s v Manufacturing margir - v Variable selling and administrative exp - v Contribution margin - v