Answer:
Total flexible cost= $157,500
Step-by-step explanation:
Factory supervisor is a fixed cost.
First, we need to calculate the unitary variable cost:
Unitary variable cost= 108,000/160,000= $0.675
Now, the total flexible cost for 180,000 hours:
Total flexible cost= 0.675*180,000 + 36,000
Total flexible cost= $157,500