Answer:
Total labor cost= $70,000
Explanation:
The supervisor salary is a fixed labor cost, it is unlikely that would change with production.
First, we need to calculate the unitary variable direct labor hour:
Unitary variable direct labor hour= 30,000 / 3,000
Unitary labor hour= $10
Now, the flexible budget for 5,000 hours:
Fixed cost= 20,000
Variable cost= 10*5,000= 50,000
Total labor cost= $70,000