Answer:
Total cost= $877,500
Step-by-step explanation:
First, we need to calculate the unitary variable cost:
Unitary variable cost= 135,000 / 30,000= $4.5
Unitary variable cost= 180,000 / 40,000= $4.5
Unitary variable cost= 225,000 / 50,000= $4.5
Now, the total cost for 35,000 hours:
Total cost= Unitary variable cost*total number of hours + fixed costs
Total cost= 4.5*35,000 + 720,000
Total cost= $877,500