Somerset Computer Company has been purchasing carrying cases for its portable computers at a purchase price of $57 per unit. The company, which is currently operating below full capacity, charges factory overhead to production at the rate of 43% of direct labor cost. The unit costs to produce comparable carrying cases are expected to be as follows: Direct materials $8.00
Direct labor 12.00
Factory overhead (40% of direct labor) 4.80
Total cost per unit $24.80

If Somerset Computer Company manufactures the carrying cases, fixed factory overhead costs will not increase and variable factory overhead costs associated with the cases are expected to be 25% of the direct labor costs.

Required:
Prepare a differential analysis dated April 30 to determine whether the company should make (Alternative 1) or buy (Alternative 2) the carrying case.