Rap Corporation produces outdoor portable fireplace units. The following per unit cost information is available: direct materials $20, direct labor $25, variable manufacturing overhead $14, fixed manufacturing overhead $21, variable selling and administrative expenses $9, and fixed selling and administrative expenses $11. The company's ROI per unit is $24. Compute Rap Corporation's markup percentage using variable-cost pricing. (Round answer to 2 decimal places, e.g. 10.50%.) Variable-cost pricing markup percentage %