ech Com's predicted variable and fixed costs for next year are as follows: Variable Costs Fixed Costs Manufacturing $486,000 $509,040 Selling and administrative 122,400 712,800 Total $608,400 $1,221,840 Tech Com is a small company producing a wide variety of computer devices. Per-unit manufacturing cost information about one of these products, a webcam, is as follows. Direct materials $8 Direct labor 4 Manufacturing overhead: Variable 3 Fixed 6 Total manufacturing costs $21 Variable selling and administrative costs for the webcam are $4 per unit. Management has set a target profit for next year of $390,000. Required a. Determine the markup percentage on variable costs required to earn the desired profit. Note: Round your answer to the nearest whole percentage point