Answer: $39,240
Step-by-step explanation:
Total variable cost:
= (variable manufacturing overhead cost per MH × Estimated total machine-hours) of machining and Assembly
= (1.9 × 7000 + 2.1 × 3000)
= $19,600


= 6.54
Overhead applied to machine B:
= Overhead rate × Machining machine-hours(4,800 + 2,200)
= 6.54 × 6,000
= $39,240