Incremental analysis Information regarding current operations of the Farrell Corporation is given below: Sales $950,000 Variable Costs $450,000 Fixed Costs $310,000 A proposed addition to Farrell's factory is estimated by the sales manager to increase sales by a maximum of $750,000. The company's accountants have determined that the proposed addition will add $320,000 to fixed costs each year.
(a) Explain why the existing $310,000 of fixed costs is a sunk cost while the $320,000 of fixed costs associated with the proposed addition is an out-of-pocket cost.
(b) Calculate by how much the proposed addition will either increase or reduce operating income. (Show all calculations)