Hummingbird Company uses the product cost concept of applying the cost-plus approach to product pricing. The costs and expenses of producing 25,000 units of Product K are as follows: Variable costs: Direct materials $2.50 Direct labor 4.25 Factory overhead 1.25 Selling and administrative expenses 0.50 Total 8.50 Fixed costs: Factory overhead $25,000 Selling and administrative expenses 17,000 Hummingbird desires a profit equal to a 5% rate of return on invested assets of $642,500.