Can you also include an explanation & calculations as well please :)

Cost Savings from External Purchase The Reno Company manufactures Part No. 498 for use in its production c cost per unit for 20,000 units of Part No. 498 is as follows: 13-23 ydle. The Direct materials6 Direct labor 30 Variable overhead... 12 $64 The Tray Company has offered to sell 20,000 units of Part No. 498 to Reno for $60 per unit. Reno will make the decision to buy the part from Tray if it produces a net incremental benefit of APPROACHES TO SPECIAL MANAGERIAL DECISIO $25,000 for Reno. If Reno accepts Tray's offer, $9 per unit of the fixed overhead applied would be totally eliminated. Furthermore, Reno has determined that the released facilities could be used to save relevant costs in the manufacture of Part No. 575. Required How much savings must be attained in the production of Part No. 575 in order to produce a net incremental benefit of $25,000? (AICPA adapted)