21-1 Flexible budgeting Fabricating Inc is one of the largest manufacturers of office furniture in the United States.

21-1 Flexible budgeting 

Fabricating Inc is one of the largest manufacturers of office furniture in the United States. In Grand Rapids, Michigan, it assembles filing cabinets in an Assembly Department. Assume the following information for the Assembly Department: 

Direct labor per filing cabinet  12 minutes

Supervisor salaries    $150,000 per month

Depreciation    $24,500 per month

Direct labor rate    $22 per hr.

Need help preparing a flexible budget for 18,000, 20,000, and 22,000 filing cabinets for the month of August 2016 in the Assembly Department.