Final answer:
The contribution margin per machine hour for sofas is $365.
Step-by-step explanation:
To calculate the contribution margin per machine hour for sofas, we first need to determine the contribution margin of sofas. The contribution margin is the difference between the sales price and the variable cost of a product. For sofas, the contribution margin is $740 - $375 = $365.
Next, we need to determine the number of sofas that can be produced per machine hour. The company can manufacture 1 sofa per machine hour.
Finally, to calculate the contribution margin per machine hour for sofas, we divide the contribution margin of sofas by the number of sofas produced per machine hour. Therefore, the contribution margin per machine hour for sofas is $365 / 1 = $365.