Answer:
It is 33 percent (C)
Step-by-step explanation:
Total cost = $50 + $10 = $60
Using 33% mark-up on total cost,
Selling Price = 133/100 * $60
=$79.8
≅ $80
Hence, expected profit margin = $80- $60
=$20
Agreed mark-up is applied on the estimated total cost of the product to determine its selling price and then its profit.