Final answer:
The average fixed cost per newspaper increases when sales fall by 20 percent.
Step-by-step explanation:
Fixed costs are costs that remain constant regardless of the level of production or sales, while variable costs vary with the level of production or sales. In this case, the rental factory cost and salary obligations are fixed costs, while the marginal printing cost and delivery cost are variable costs.
Given that sales fall by 20 percent from 1,000,000 newspapers per month to 800,000 newspapers per month, the total cost of production will remain the same. However, the average fixed cost (AFC) per newspaper will increase because the fixed costs are spread over a lower number of newspapers.
Using the formula AFC = Total Fixed Costs / Quantity, we can calculate AFC per newspaper before and after the sales decrease:
Before:
AFC = Total Fixed Costs / Quantity = $1,700,000 / 1,000,000 = $1.70
After:
AFC = Total Fixed Costs / Quantity = $1,700,000 / 800,000 = $2.13
Therefore, the AFC per newspaper increases from $1.70 to $2.13 when sales fall by 20 percent.