Answer:
$12,280,000.
Step-by-step explanation:
All the direct costs involved in the manufacturing of a product except fixed cost is called prime cost e.g direct material, direct labor etc.
Direct Material = $4,200,000
Direct labor = $8,080,000
Total Prime cost = Direct material + Direct labor = $4,200,000 + $8,080,000 = $12,280,000
Overhead costs are not classified as the prime cost because these are indirect costs.