E20.5 Use incremental analysis for make-or-buy decision Pottery Ranch Inc. has been manufacturing its own finials for its curtain rods. The company is currently operating at 100% of capacity, and variable manufacturing overhead is charged to production at the rate of 70% of direct labor cost. The direct materials and direct labor cost per unit to make a pair of finials are $4 and $5, respectively. Normal production is 30,000 curtain rods per year. A supplier offers to make a pair of finials at a price of $12.95 per unit. If Pottery Ranch accepts the supplier's offer, all variable manufacturing costs will be eliminated, but the $45,000 of fixed manufacturing overhead currently being charged to the finials will have to be absorbed by other products. Instructions a. Prepare the incremental analysis for the decision to make or buy the finials. b. Should Pottery Ranch buy the finials? c. Would your answer be different in (b) if the productive capacity released by not making the finials could be used to produce income of $20,000. NOTE: Enter a formula, a cell reference, or a value (if you are unable to reference a cell), into the yellow shaded input cells. b. Direct materials Direct labor Variable overhead costs Fixed manufacturing costs Purchase price Total annual costs Total annual cost Opportunity cost Total cost Net income Make Buy Increase (Decrease) Make Buy Net income Increase (Decrease)