Final answer:
The current break-even point for Martha Manufacturing is 1,500 units. To justify an additional $16,000 in advertising expenses, the company needs to sell an additional 334 units. If the selling price is reduced by 10% and sales volume increases by 10%, the operating income will increase by $8,000.
Step-by-step explanation:
Martha Manufacturing Break-even Analysis
To determine the break-even point in terms of number of units, we use the formula:
Break-even Point (Units) = Fixed Costs / (Selling Price per Unit - Variable Cost per Unit)
Using the provided numbers:
Break-even Point (Units) = $72,000 / ($80 - $32) = $72,000 / $48 = 1,500 units
Sales Increase Justification for Additional Advertising Expenses:
For the $16,000 increase in advertising expense to be justified, the increase in contribution margin must offset this cost. The contribution margin per unit is currently $48 ($80 selling price - $32 variable cost).
Required Sales Increase = Additional Advertising Expense / Contribution Margin
Required Sales Increase = $16,000 / $48 ≈ 334 units
Analysis of a 10% Reduction in Selling Price and Resulting 10% Increase in Sales Volume:
New selling price: $80 - 10% of $80 = $80 - $8 = $72
Increase in sales volume: 10% of 2,000 units = 200 units
New Operating Income:
Additional Revenue = 200 units * $72 = $14,400
Additional Variable Cost = 200 units * $32 = $6,400
Change in Operating Income = Additional Revenue - Additional Variable Cost = $14,400 - $6,400 = $8,000
Therefore, the correct answer is (b) Operating income will increase by $8,000.