Make-or-Buy Decision Companion Technologies Company has been purchasing carrying cases for its portable tablets at a delivered cost of $55 per unit. The company, which is currently operating below full capacity, charges factory overhead to production at the rate of 42% of direct labor cost. The total unit costs to produce comparable carrying cases are expected to be as follows: Direct materials $25.00 16.00 Direct labor Factory overhead (42% of direct labor) Total cost per unit 6.72 $47.72 If Companion Technologies 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 13% of the direct labor costs. a. Prepare a differential analysis report for the make-or-buy decision. Enter your final answer as a positive amount if it represents a net cost savings; enter a negative amount if it represents an increase in cost. COMPANION TECHNOLOGIES COMPANY Make or Buy Carrying Case Differential Analysis Report Purchase price of carrying case Differential cost to manufacture carrying case: Direct materials Direct labor Variable factory overhead b. On the basis of the data presented, would it be advisable to make the carrying cases or to continue buying them