10.4 ZZOOM, Inc., has decided to discontinue manufacturing its Z Best model. Currently, the company has 4,600 partially completed Z Best models on hand. The government has put a recall on a particular part in the Z Best model, so each base model must now be reworked to accommodate the style of the new part. The company has spent $110 per unit to manufacture these Z Best models to their current state. Reworking each Z Best model will cost $22 for materials and $25 for direct labor. In addition, $9 of variable overhead and $34 of allocated fixed overhead (relating primarily to depreciation of plant and equipment) will be allocated per unit.

If ZZOOM completes the Z Best models, it can sell them for $180 per unit. On the other hand, another manufacturer is interested in purchasing the partially completed units for $105 each and converting them into Z Plus models. Prepare a differential analysis per unit to determine if ZZOOM should complete the Z Best models or sell them in their current state.