Final answer:
The contribution margin for July is $217,800.
Step-by-step explanation:
The contribution margin for July is $217,800.
The contribution margin can be calculated by subtracting the total variable expenses from the sales revenue. In this case, the total variable expenses include the cost of goods sold, total variable selling expense, and total variable administrative expense.
Contribution Margin = Sales - Total Variable Expenses
= $433,000 - ($174,800 + $25,600 + $14,800)
= $217,800