From the following particulars of Rose Mary Company, calculate the total manufacturing overhead variance for the total production cost flexible budget variance. 
Definitions:
Maximize Profits
The process by which businesses aim to achieve the highest possible profit through revenue maximization and/or cost minimization strategies.
Minimize Losses
Minimize losses refers to strategies or actions taken by businesses and investors to reduce financial losses or the negative impact of less successful investments.
Marginal Cost (MC)
The cost of producing one additional unit of output.
Marginal Revenue (MR)
The revenue derived from selling one additional unit of output.
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