Final answer:
If Mallory buys the widgets instead of making them, they would have a savings of $16,000.
Step-by-step explanation:
The incremental cost or savings for Mallory if they buy the widgets instead of making them can be calculated by subtracting the manufacturing overhead costs that will be eliminated from the cost of producing the widgets. In this case, the manufacturing overhead costs that will be eliminated amount to $16,000. Therefore, the incremental cost or savings for Mallory would be a savings of $16,000.