Answer:
$450
Step-by-step explanation:
The contribution margin refers to the specific product's price minus all associated variable costs for that product, which will provide the incremental profit earned for each unit sold. Therefore in this scenario, since each machine hour produces 3 couches we can make the following calculation.
($500 * 3) - ($350 *3) ...... this is the sale price for 1 hour machine hour which creates 3 couches minus the variable cost for those three couches
$1500 - $1050 = $450
Therefore the contribution margin per machine hour for couches is $450