Warren Company's overhead cost information is given below: 
Required:
a. Compute the total overhead variance.
b. Calculate the flexible-budget variance.
c. Determine the fixed overhead volume variance.
Definitions:
Combination Compensation Plan
A compensation structure that involves a mix of salaries, commissions, bonuses, or other incentives to motivate employees or sales agents.
Specified Salary
A predetermined amount of compensation agreed upon by an employer and employee, typically stated in a job offer or employment contract.
Commission
A form of incentive and compensation given to salespeople, brokers, or agents, typically calculated as a percentage of the sales they generate.
Customer Satisfaction
A measure of how well a product or service meets or surpasses the customer's expectations.
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