Morales Corporation produces microwave ovens. The following per unit cost information is available: direct materials $40, direct labor $21, variable manufacturing overhead $18, fixed manufacturing overhead $48, variable selling and administrative expenses $10, and fixed selling and administrative expenses $26. Its desired ROI per unit is $31. Compute the markup percentage using variable-cost pricing. (Round answer to 2 decimal places, e.g. 10.50%.) Please show work