Answer:
Variable Costs : Supervisory $5,000
Fixed Costs : Salaries $5,000
Mixed Cost : Maintenance $4,000
Explanation:
Variable Costs
These costs vary in direct proportion with the amount of production.
Examples : Materials and Labor
Fixed Costs
Theses costs do not vary with amount of production but stays the same in the relevant range.
Examples : Salaries of Mangers
Mixed Costs
These contain a variable cost element and a fixed cost element
Examples : Telephone Bill and Maintenance Costs