Question Completion:
We assume that the variable manufacturing cost is $55 per unit.
Answer:
The change in operating income = $60,000
Step-by-step explanation:
a) Data and Calculations:
Special order = 3,000 units
Price of special order = $75 per unit
Variable cost per unit (assumed) = $55
Fixed costs = unchanged
Variable marketing and administrative costs = unchanged
The change in operating income = $60,000 (($75 - $55) * 3,000)
b) Given the above scenario and the assumed variable cost per unit of $55, the change in operating income will be a total of $60,000, which adds to the normal business of the company.