Answer:
Gross manufacturing margin= 140,000
Step-by-step explanation:
Giving the following information:
Production costs (10,000 units):
Direct materials $140,000
Direct labor 40,000
Variable factory overhead 20,000
Total variable costs= 200,000
Units sold= 8,000 units
The manufacturing margin is the result of deducting from the sales the variable components.
Unitary variable costs= 200,000/10,000= $20
Sales= 300,000
Variable costs= (20*8,000)= 160,000
Gross manufacturing margin= 140,000