Final answer:
Hi-nge Manufacturing's contribution margin is calculated by subtracting the total variable costs ($720,000) from the sales ($1,680,000), resulting in a contribution margin of $960,000.
Step-by-step explanation:
Contribution Margin Calculation
To calculate the contribution margin, one must subtract the total variable costs from the sales revenue. In this case, Hi-nge Manufacturing's variable costs are the sum of variable cost of goods sold and variable selling and administrative expenses, which are $420,000 and $300,000 respectively. Therefore, the total variable cost is $420,000 + $300,000 = $720,000.
The company's sales are given as $1,680,000. Subtracting the total variable costs from the sales, we get:
Sales - Total Variable Costs = Contribution Margin
$1,680,000 - $720,000 = $960,000 contribution margin.
This figure is crucial for the company as it indicates how much revenue is available to cover fixed costs and contribute to profit.