Flexlux, Inc. reports the following? information: Units produced 520 units Units sold 520 units Sales price ?$110 per unit Direct materials ?$40 per unit Direct labor ?$25 per unit Variable manufacturing overhead ?$30 per unit Fixed manufacturing overhead ?$14,000 per year Variable selling and administrative costs ?$15 per unit Fixed selling and administrative costs ?$25,000 per year What is the unit product cost using variable? costing?